Because they never phrase it, to themselves, as screwing over another person. They didn’t see them, or they didn’t think the other person would mind. C’mon, that’s human nature 101. (And because some people will retaliate for imagined slights. In your story, the higher level person is trying to play gatekeeper. Training mobs is petty.)
Which works for you, but obviously a lot of people prefer to vent in General. It’s not on them to level 1 because their bickering bothers you.
I use RCR when the language in a chat channel is a violation. I actually didn’t bother to turn off the mature language filter, but guess what? I can report obvious profanity, because even if the player ‘masked’ it instead of the filter, it is a violation. I only cause problems for one person, and that only if Blizzard decides the chat requires a penalty.
The idea of abusing RCR takes a lot of players reporting in a short amount of time. That’s not one person correctly reporting a violation. That’s either (1) a concerted effort by a group of people to silence one person or (2) a violation strong enough for warrant a lot of players all using RCR with no coordination.
I don’t.
Sorry, but while it’s a convoluted story, it’s not really what stopped you from getting help.
RCR only has a seemingly immediate effect if enough players do it, that effect being a squelch (if that happens in Classic). A squelch prevents a player from continuing to send chat messages. For that player to say “I refuse to help anyone because players abuse RCR”, they weren’t squelched or silenced - and that means it was a past situation and you have no idea whether it was warranted or not.