"it is robust (notice that whoever considers the negatively-rated post does
*not* disrespect the guidelines should click the +1 button);"
What are you talking about? If three people downvote, it doesn't matter how
many people upvote the post. It's hidden and it will stay hidden (to confirm
this, I upvoted the post of pyraman in this thread just for the purpose of an
experiment:
https://trisquel.info/en/forum/trisquel-8-release-countdown-clock
The counter was on "-3", then I voted one up, so now it's on "-2", and still
it's hidden.
So in conclusion you think that three people should be enough to decide what
is trolling and what is not trolling.
And you obviously also like to ignore the repeated cases of abuse that
happened in the past.
People will never just press the -1 button for the sake of protecting the
community guidelines, and they didn't so far.
They will read something they don't like, they don't want to bother replying,
they just want the unpleasant post to go away, so they push "-1".