They don't see them. Or someone reports or they do some causal research deleting what they just don't like.
So this means that the responsibilities also lies with the ones who reports them only to get their number of correct reports count increase.
So many people have so many different motives here.
Interesting insight.
But the real solution is to not make such posts.
The real solution is to create the rules that works for the people, not to create a selection of the people that are accepting absurd rules.
The other part of that fallacy is that "thanks" or "great" or whatever makes someone polite, and lack of such one-word replies makes someone rude... no, it doesn't.
The construction [if]... [then]...[else]..[end if] make sense in the same manner as "Thank you"-"Np" construction for instance.
The construction "Thank you" - [?] doesn't make sense in the same manner [if]...[then]...[else]...[nothing here even if it should be be].