Ah, okay I get your point now I think.
The big trouble I've found in discussions about any form of <x>-ism is that I tend to disagree with people to mere degrees, and not categorically, and (for me at least) those are the hardest arguments to make. It's telling people they have a point, just not quite to the degree they're taking it, as opposed to something like "no, homeopathy just doesn't work, period end.".
This was the complaint I was making in meatspace a couple of years ago : we (liberals) were applying the <x>-ist labels far too quickly and lowering the bar for what qualified. Making chimp noises when Obama was on TV was racist, but then so was wearing a Mariachi costume for Halloween. It's like ending every sentence with an exclamation mark - suddenly nothing is emphasized.
And on the flip side, the few conservatives I know were quick to dismiss any claims of <x>-isms on the grounds that liberals were too sensitive. They were right - air conditioners really weren't sexist (look that one up if you're unfamiliar), but that doesn't mean we should just let it slide when Trump talks about grabbing by the pussy.
Looping back I'd say that if a randomly selected someone is found painting another side incorrectly as being a racist, odds are that person will be a liberal (IMO only, and I'm willing to concede this part given evidence). Yes, some liberals call everyone they disagree with an <x>-ist. But that naturally doesn't mean that all liberals do that, or that only liberals do that. And that's without even touching on the issue of abstracting every issue and behavior into a simplistic liberal/conservative dichotomy, when in my opinion the more important axis these days is authoritarian/libertarian (the lowercase "l", not the removed-from-reality Libertarianism we run into a lot here on ISF).