Look, I'm not mad so much as irritated; but my mentions are a horrific place a solid 95% of the time and the only way I can avoid chewing through my own keyboard sometimes is either A) blocking people or B) explaining to them that we're not gonna agree and I'd rather not keep going round the circle with them.
If I think they're dogshit people, I just block. But sometimes I think the person means well and we just don't even remotely agree.