I don't know how they seem to not care at all? Maybe they have accepted that they won't rank up anymore? Or maybe they just don't care since they can still earn some cents with their ranks?
I wouldn't put it pass them that they don't even know it exists and just want to know where they can earn their money and how. I don't look at the newbies section very often but, it's clear that most of the posts there aren't about Bitcoin at all rather they are about airdrops and ICOs.
Plus, these types of ICOs and bounties don't require you to be a certain rank and they encourage spam around the forum. So even if they know about merit they probably don't care as long as they can spam and get their tokens...