"I would like to know what parallel universe people live in if they think these are terms that are reasonable or in any way appropriate to use."
Yes I agree with that. "Real abuse" reminds me of "real rape". It's a way of minimising something that is real, by comparing it with something that is a more violent manifestation of that reality. So emotional abuse isn't real, because it doesn't involve being punched and being raped by your husband isn't real, because it doesn't involve a balaclava-clad stranger.
"there are very powerful voices advising similar courses of action in every situation and that challenging them can be difficult"
Again, I very much doubt that there are many posters who advise similar course of action in every situation. As for being difficult to challenge, that's not really a valid criticism. You can either shrug and say "Sod it, no-one's going to listen to me on this thread, I can't be arsed to post on it" or you can go ahead and challenge them if you're feeling obstinate and know you have plenty of time to waste today. You can't really complain if people stick to their arguments and refuse to be swayed by your's, that's just the nature of debate. All you can do is state your case, engage with their arguments (if they're genuine and you can be arsed) and accept that you win some, you lose some.
"the sort of hysterical response we've seen on this thread to any dissent."
Hysterical response to any dissent? I've dissented from the main premise of this thread and I don't think I've been met with an hysterical response. The general opinion of this thread, is that MN'ers are hyperbolic in their use of abusive, toxic etc. and are doing damage by doing so. The people who disagree with that view, are the dissenting voices here.