I have a few comments to make, but then won’t respond to this further lest it escalate.
I have been deep diving into Discourse to try and change how flags work, but it is very difficult. A lot of other users have had similar problems to us, so I have done what I can. I have made the “hide flag post sensitivity” lower, so posts will be hidden less than before.
As a trial, I have disabled " high trust flaggers auto hide posts." This is only a trial, so please don’t make me regret turning it off. We will see how it goes moving forward and re-evaluate.
EDIT: To finish, any posts insulting others and using harsh language violate community guidelines, and action is taken. There is a difference between flagging posts that violate guidelines, and flagging anything you disagree with. The users that do the latter can expect to have their flagging privileges revoked.