Demerit will not solve anything, a newbie with zero merits or -1000 merits will still be able to post crap if it fits his agenda.

Probably a flag system like we have right now for scammers and only for the serious boards would be more appropriate as it will warn readers the moment they see the topic that it was flagged by multiple members as misleading or having a clickbait title or presenting false information. Of course, it should not be available for topics in meta or reputation as we all know how it will end.

But, it won't stop guys that do this intentionally, they will simply claim they are oppressed, censored,  that the Illuminati have taken over bitcoin and bitcointalk...and so on...