I find AOC actually refreshingly principled.
- It encourages others to do the same; someone doesn't agree with you on an important issue (pro life?) - just refuse to work with them. This furthers the divide in US politics and is (imo) an overall negative.
- It hurts her own cause by removing support she already has - is this what a representative is supposed to do?
Although true this is hyperbole. We're not talking about the "deadly protests" for BLM so why did the capitol protest become a "deadly insurrection"?
A lot of people are calling for Donald Trump to go to prison/etc; does that mean (if he was still president) he should stop talking to anyone saying so?
I think your fist point is making this into something more than it really is.