I used Wobbs at the beginning of round 3 and was told that he was a liability against some new threats. Then I began using him with wish support, got rid of safegaurd for tickle, and actually wound up using Scizor on a sun team. It allowed me to eliminate Specs pokemon AND have wobb allow for easy setup in the same match. I still personally believed that the extra turn he gave setup sweepers was a bit of an issue but I didn't want to mention it. Expecially since Wobb has yet to bother me (I run a mental herb on half the things he wants to switch into and either u-turn or volt change).
This guy makes perish song force you out the minute your opponent uses it on something else. After they use perish song, your opponent can immeadiately switch into Wobbs to finish you off had you chosen not to switch right away. Switched something into that politoed only for it to use perish song? Better hope that what you switched in had STAB Ghost/Dark coverage. Otherwise, you'll be losing a pokemon if you don't get out of there.
By the way, +2 Flare Blitz in the sun deals a minimum of 176% to max/max jellicient. Even shadow claw deals a minimum of 90% after an SD. This pokemon was never a counter to blaziken. Only Slowbro. If Blaziken switches out, then Slowbro can switch out too to regenerate off the damage at least. He works only because he can keep himself healthy enough to reliably handle blaziken unless you're using him against other things. On all of my non gimmick sun teams, I've been using a bulky Slowbro to handle him and outside of taking an HP electric from mixed ones on the switch (if the mixed ones worry you, then switch to Slowking) it works every time.
I do not think he should be banned though. He is merely a powerful sweeper. You check him the same way you check dragons, terakion, landlos, etc.
Admittedly though, outside of choiced scarf pokemon switching in on Sword's Dance, protect on pokemon like Garchomp, and Hi Jump Kick missing, I have never lost a match after wisely setting up an SD with Blaziken. He carried me into early 110s on the PO ladder. The hard part is actually using Sword's Dance. And that's not all that hard if you use Blaziken on a sun team. You turn CM Suicune into setup fodder. >_>
Edit: Oh yeah, forgot about Tentacruel. Max/max bold tentacruel can be ohko'd by hi jump kick factoring in stealth rock and can't actually do anything back if Blaze is in sunlight.