Before the implementation of the system, people with redundant post from social media bounty would easily able to rank up with their reports only. I don't think it's gonna happen anymore, not a single time. Also, the people with repetive replies specially in altcoin discussion will not be able to rank up. Some exception may be the abuser. Well, abusers are also getting red painted.
Now, the point you have mentioned that it depends on sending sMerits. Well, there are currently 119 merit sources. Over the span of time, I strongly believe, theymos will implement some more merit sources, maybe more 100 or so. It can also be higher if we have qualitive application, IMO. Therefore, no one will face any kinda issue if s/he can post some good quality posts.