Where are these ''it can run psycho boost hp fire thunderbolt rocky helmet skill swap v-create whatever to kill its counters'' is going to lead? Nowhere thats where. It can choose ONE of these options and nothing more. If it runs hp fire it can defeat scizor and dies to other counters and so on. This applies to every single pokemon in the game. Anything can run a gimmick to defeat its counters. Why do you think hp fire and hp ice are so common in a bunch of attackers? This is not a ban argument. Deoxys-D is not broken, this has been explained through several times already just look at previous posts. The point here is if its unhealthy for the metagame because it helps HO. Well good news there are dozens of mons that can do Deoxys-D job too, banning it wont change anything. Also if youre so weak to HO, use something to counter it. Its that simple, if your team is weak to something you run a counter/check.
you're incorrect. deo-d gets more than one free moveslot on the more offensive sets that exist to shut down spinners. for example, on the standard life orb or gem set, the moves are sr, spikes, and two attacks, those attacks generally being hp fire, thunderbolt, psycho boost, and superpower. if sr is already on the team, deo-d can take it a step further and run three attacks plus spikes, which is an equally good moveset. point is (and i've been saying this for eleven pages now), deo-d's ability to shut down any particular one of its supposedly "hard counters" by using a perfectly viable move out of two to three free slots that it has access to makes it nearly impossible for a team to effectively check it. bandtar? superpower. scizor / forretress? hp fire. tentacruel? psycho boost. starmie? thunderbolt. the list goes on and on. you also claim that "anything can run a gimmick to defeat its counters", which is, again, incorrect. a scizor cannot beat a skarmory. a terrakion cannot beat a landorus-t. a sheer force landorus cannot beat a blissey. a deoxys-d, however, can beat a choice band tyranitar, a choice band scizor, a forretress, a tentacruel, and a starmie. how many other pokemon that are still ou can also say that they are literally uncounterable when running the right moveset for the scenario that they are in? the answer is just about zero, unless you want to drag hydreigon into this, and that's iffy as well.
your final claim really upsets me, though, because it's amazing that some people still think this is true. you specifically state that a pokemon having the ability to defeat all of the things that people claim "counter" it is "not a ban argument". that is complete lies. look back two suspect rounds for me, please, and explain to me why genesect was banned from ou. for the large majority of people, the greatest reason was its versatility. it could run choice scarf, bluff with ebelt or sash, run a choice band set, a rock polish set, even a specs set, and all of them were perfectly viable and made genesect roguishly unpredictable and difficult to deal with appropriately. now look at deoxys-d and its potential movesets. it can run dual hazards taunt, dual hazards magic coat, dual hazards status, dual hazards gem attacker, dual hazards life orb attacker, spikes + life orb three attacks, and even trick choice band/specs/scarf, all of these movesets, again, being perfectly viable. the similarities to the genesect suspect test are eerie in their accuracy.
and let's not forget, this entire post was all about the versatility of deoxys-d and its unpredictability as a whole. that's just one slice of the cake, though. let's not forget that it also sports better base defenses than any other hazard layer in ou, higher speed than any other pokemon possessing sr + spikes that is still ou, and a typing that enjoys resisting the most common offensive type of attack in bw2 ou, fighting. all these characteristics together are what combine to make a truly broken hazard machine.
Also if youre so weak to HO, use something to counter it. Its that simple, if your team is weak to something you run a counter/check.
hyper offense isn't something you can check with just one pokemon. it's not simple, if your team is weak to something, then yes, you can substitute one pokemon for another pokemon, or one move for another move to help cope with said weakness, but you open yourself up to different weaknesses by making the change in teambuilding. like i stated a lot in the auto weather thread, teambuilding is all about tradeoffs. if you want to do better against a certain playstyle, and you change your team to do so, you are now worse off against another playstyle. that's simply the nature of the game we play, and i want to make sure everyone who posts understands that before derailing the thread with "you're probably just a bad teambuilder" ad homenim arguments.