I was thinking this, but I guess we can't speak for the pros as we don't know how good a "high-level" Scorpion is.
From what I've read though, this "patient gameplay" narrows down the metagame to simply reacting to his one gimmick, where everything but blocking low and punishing is the only option. I can kinda see the point, where it's no longer a "fighting game" but a "duck and punish" game.
As for bans, I have no strong opinions. I think whatever the tournament organizers decide, I'm fine with.
If the top tournament players have this much issue with Scorpion, that's saying something, and probably bodes even worse for online as it's gonna drive people offline in droves. This character is just bad for the game as-is.