I'm perplexed that none of these low value make-up nor elementary school level crafts trending posts don't get downvoted to remove at least half of their earnings. They increased exponentially to spam level, because they've become an easy way to game the rewards.

I agree and I do when I notice them. Usually by only a portion because I don't think I should be the only one making these adjustments. Sometimes others do too, just not that often.

It is the nature of the system that downvotes aren't incentivized in any way, so for the most part nobody is going to put a lot of time into it. If we happen to see stuff, we might downvote it, otherwise not.