Isn't it demeaning for a newbie to try to earn one single merit for reporting a mammoth/gigantic 500 posts, I'll rather stay on the forum without merits,and read,learn and report spam posts without really witch hunting for them..

Removing merits from spammers is impossible,there is currently no Demerits system in place in the forum,though @Loycev has made a thread proposing it, but it's yet to be approved..
So no matter what a user does,his/her merit remains with'em, even if they get banned...

I can't really see the advantage of this suggestion,as we'll simply be getting tons of bad reports from noobs who find it hard to earn one elusive merit the "right" way

Reporting spam posts is simply ones own voluntary way of contributing/giving back to the forum