Yeah, I leave every year.
If anything, more commercial RPG Maker games will only continue to raise the bar for people serious about game development in RPG Maker. If the people who make shitty games decide to charge money for them, they won't get played and you probably won't even be aware of their existence. The cream usually rises to the top, or at the very least the shit usually sinks to the bottom. A bad game developer who charges money for their games is no more annoying than one who doesn't, so if we get any of those people on RMRK, they won't be any different than the ones we already get, and I haven't noticed any problems with annoying RPG Maker users joining. Also, I don't know who you-know-who is.