If people, who have a higher value upvote, would actively seek some content and upvote it with some real value, not with 1% that is 0.00 $ worth then maybe others would not use upvote bots. There sure is value in curation groups, but at least one I have seen flagged so heftily that the account stopped curating - he was accused of spamming (which is sometning unavailable here as no-one has a Steemit e-mail) while he was collecting all the posts he suggested for the Curie separated by tag category in a special post, which I used as sort of bulletin (and others considered it spam) to quickly find some content from that particular category.
I have also seen some posters here which give big upvote for the 1 comment (even if its just a sentence) and the rest gets nothing regardless of how elaborate it might be. Or others just upvote their own comment and announce to use the supposedly unsatisfactory content of the original post to write their own. It goes on and on, and it's tiresome.
People simply bring their own personal traits into this platform and act in resonance with them, mostly.
I know your post was how to use the bidding bots to own advantage to promote own content. Somewhere I read that the bot has to provide 267% more value than invested in to be profitable for the investor. (I didn't check it).