If my perception is right, then red-tagging is not 100% accurate? And some of the tagged members might not be involved in shitposting or any event that had led to tagging?
The rate of false convictions in the US is over 1%. What makes you think that forum members, especially with such different backgrounds, can reach an accuracy of 100%? You lack common sense.
You have no better solution right now, because activities of some DT members (not yours) are against the rules/guidelines.
There are no DT rules and you can't break guidelines. Either you follow them or you do not. It's a choice.
And hopefully he won't give out the forum to members, who are earning money with bashing posts.
I'd take legitimate "bashing" posts over 3rd world shitposting any day.