I'm A Problem

Someone who performs exceedingly well in competitions resulting in competitors feeling inadequate.

Used as a term of endearment.

Variation:
I'm a bit of a problem
I'm being a bit problematic

I'm a problem on the icerink

I'm not the problem, I'm the mirror

Quoted from ChatGPT, it means, "You only have a problem with me because I'm exposing you for your errors."

Boss: Your behavior is offensive.
Me: My behavior is trying to show you how poorly run your organization is. I'm not the problem, I'm the mirror.