Only me.
Because I don't play these games enough to get any better.
So long as you're willing to train, learn, and challenge yourself often, you can get as good as you want.
And "scrub" doesn't necessarily mean poorly skilled btw, it's defined by many top players as a mindset where someone is holding themselves back through artificial rules (I think, it's been a while and I'm pretty much just paraphrasing Sirlin at this point).