Unfortunately post #26 and #28 I think nicely point out why this is impossible.
One side believes that calling people they disagree with racists and bigots isn't abusive; its just stating a fact.
It's either stating a fact or it's mis-characterizing someone's opinions and beliefs. Either way, it isn't same thing as "name calling" in this classic sense. Calling someone a "scumbag" is a content free insult. If we expand our definition to include every mischaracterization of someone's position, argument or beliefs, that brings in every straw man and mistatement of fact, making it very nebulous. However, I wouldn't mind a broader definition than what the OP is referring to here. The trouble is that, as I said, no one has gone to the considerable trouble to compile data based on
any definition, so there is no point in picking a side in this thread.
I would also mention that perceptual bias plays a large role here. People tend to perceive statements made by people on their "side" as being reasonable rather than insulting, and perceive statements on the other side in the opposite way. This is why I decline to offer my perception here, because I am mindful that it is likely influenced by my own bias, in spite of the fact that I believe my bias is less than the typical poster here. Which again, underscores why the entire discussion is pointless unless someone can do better than offer their personal, unquantified observations.
The question of when it is and isn't reasonable to label someone a bigot is a topic that probably deserves its own thread, if it could be done thoughtfully, perhaps on the DC. It needs to be discussed in the abstract to avoid making it personal to certain posters. I'll just leave it at that.