Merit is good and also a bad one. Merit helps the forum for spamming and also for having a good quality posters but the negative effect of merit is farming and abusing those sMerit to their alt accounts. It is very unfair to us, we're just new to this forum and even I am having good post I didn't receive merit.
See the merit abusers who you are thinking are getting into alt account farming is actually being done for the greater good. These account farmers will use their merits to rank their accounts - which can have two possibilites :
1. They will be caught and read tagged by DT. OR,
2. They will run out of merits sooner or later.
The first option will negate those account directly from trying to make any money from shitposting. The second one will actually put those accounts in a doldrums state - because they are inherently shitposters and wont be able to rank up their accounts further. They will remain stuck until then improve post quality and all.