Most curators (people with money invested here) are in it for the money, not to find good content and get it seen. And under the new rules, it's very easy to make money curating. Just find a post that is above $10, and upvote it 100%, unless it's complete garbage. As long as it's not obviously a shitpost (picture of a flower and 2 sentences, for example) it won't get hit by downvotes, and you'll max your profits. Rinse and repeat.
In other words, most curators post H21 are just spamming their votes onto posts that already have lots of votes. That's not real curation, it's profiteering, and being called "NewSteem".