Ravenous Bugblatter Beast of Traal
This is a common fallacy, so common it has a name: The Stormwind Fallacy. It's been disproven again and again.Not loving the over-generalization here. I don't enjoy power gaming, and it's not because I'm a poor DM, not because I am running a pre-made module (90% of my adventures are home-brew). It's because I think power gaming is usually detrimental to running a game that is focused on character and story development, which is my whole thing. And I'm the one doing all the work.
And sure, you can be a power-gamer who is big into roleplay. But I haven't run into many. YVMV.