Gliscor walls a huge chunk of the metagame. Without Gliscor checking things, many things would be broken. Nominating it for suspect would allow those things to run rampant. But in your individual team, if Gliscor is walling too much, then arbitrary HP Ice to catch it off guard...is intelligent! Surprise movesets and tactics like that to beat your usual checks or counters is generally a good thing. It's not as ridiculous as you're making it seem.
For the record, the ridiculous part of running HP Ice on every physical attacker is that your over-specializing a pokemon to take out one that is easily handled by special or mixed sweepers. I never doubted Mienshao running a HP, it's special attack stat is good. I argued against Terrakion, whose Sp Atk isn't useful outside of taking out Gliscor, which it can do physically and should have teammates who can handle it.
And Infernape's cool, I like him. Work Up/Flame Charge/Acrobatics/Magic Coat aren't the best options though, due to his frailty.
Acrobatics isn't too bad of an idea, but I will agree that Infernape has better options.
One. Nobody's confused as to how to handle Gliscor. You can't just "throw in a Gliscor counter" on every team. In many instances, that will offset its synergy or purpose. What you CAN do is use an unexpected move to beat Gliscor. Gliscor always switches in on Terrakion. Terrakion uses HP Ice and beats Gliscor. It's not a terrible concept.
If one of your pokemon, especially a sweeper, is walled by Gliscor, then it's in your best interests to prepare to check/counter that Gliscor. That's called good team building. You
can use a Dunsparce HP Ice to attack Gliscor, doesn't mean you should if you want to win. And the unexpected move is only a good concept if it has uses outside of attacking
one pokemon. Otherwise it's taking away from that pokemon's potential to sweep, which is why you should leave countering Gliscor to Gliscor counters.
Two. Nobody's nerfing their best offensive stat...Generally when someone wants to go mixed they nerf a defensive stat. In Terrakion's case, that's not necessary as - Spa nature still solidly 2hkoes Gliscor with Poison Heal.
Taking away from Terrakino's physical moveset is nerfing it's physical attacking power by removing what it can do with it's physical attack. When you take away something that could let Terrakion sweep a team, like X-Scissor or Stone Edge, you leave Terrakion open to pokemon who would normally not be an issue and in Terrakion's case unless you predict correctly (red flag for a bad counter) you're forced out unless you invest in Sp Atk or carry Balloon (which uses it's superior Physical attack and gives it that extra opportunity to sweep more consistently than HP Ice)
Three. @you and alphatron: Mienshao standard has HP Ice because of its very usable special attack stat.
I addressed this issue before. This is irrelevant since we were discussing
Terrakion.
Four. Neither of you have actually made any sense. A well played Gliscor will never stay in on a special sweeper who will obviously kill it.
If we're not making sense it's because you're not getting the concept of a pokemon battle. It's 6 on 6. Meaning that if a Physical Terrakion has issues with one pokemon, one of it's 5 teammates should be able to handle it if you're good at team-building. If you force out or KO Gliscor, then Terrakion has an easier time sweeping. That's called synergy. If you want to use Terrakion, why do you refuse to support Terrakion offensively?
The purpose of Gliscor is to wall physical threats. Thus, Gliscor switches in on a physical threat (Terrakion). If instead it's a special threat (Reuniclus, Rotom-W, etc), Gliscor doesn't switch in.
You're assuming one out of many possible outcomes in a battle. If Gliscor comes in, and Terrakion's walled, you can counter Gliscor with a strong special sweeper and grab a boost on the switch or dent something coming in and make sure if Terrakion needs to come in again, it can sweep easily.
Its purpose is to wall the physical sweepers without super effective STAB moves. It does that job very well and generally switches in on Terrakion, accordingly. That's when you take it by surprise!
Read Pwnemon's reference to surprise factors. It's only a good surprise if it threatens anything else, otherwise you're over-specializing a pokemon when it's teammates should be supporting it for that purpose.
Capitalizing on the general use of a Pokemon to net a surprise KO to aid your way to a sweep isn't bad.
Never said
bad, I pointed out that Terrakion has better things to do.
In Terrakion's case especially, it doesn't need a third attacking option. One boosting move, its STAB moves, HP Ice to kill the one Pokemon that really beats it. What's the problem?
You leave yourself open to things that wouldn't normally be an issue, like Reuniclus.
Huh waitwaitwait, what. You complain Gliscor would be a suspect because it makes random shit use HP Ice to be viable and then say Gliscor isn't suspect and that we... shouldn't use those things to begin with?
If HP Ice is what makes a specially inept physical sweeper do its work, then why not use it? It's not ridiculous, it works.
It leaves you open to things that would normally not be an issue when the original issue can be remedied by good team building. The idea that every physical sweeper is tested with Hp Ice undermines the fact that there are pokemon who can handle the single pokemon that beats it. When you use pokemon that can counter each others counters you create team synergy, which apparently is becoming outdated.
Edit: Reuniclius. That is all. If you're ok with that then fine, just remember that you're leaving yourself open unnecessarily.