That's the old 'pluck your eye out' doctrine!
Seriously some of these people seem to think they are going to hell if they don't pick a gay for every office in their church. That is a real problem.
I suppose so, but bishops (overseers, episkopos) are a legitimate part of church structure. The eye here refers to clearly sinful habits, I believe. The Lord is urging His own to be done with those and not permit them to obstruct their obedience to the call. Which ultimately is an ongoing process culminating in heavenly perfection on the other side of glory.