Edit: whoops! I assumed you were @bot-or-not. I apologize. Please disregard the parts of my reply intended for them personally. The answer to your question is below.
I have to ask you to answer my question. I ask you to answer it substantively, and forthrightly, because I am not trying to trick, or mislead, or promoting an agenda.
I don't care about my rewards, and I've never spent a satoshi of Steem, nor have any plans to.
I spent more than 12 hours on @blocktrades post on making curation more profitable, and saw a comment that @leotrap made to @timcliff, proposing that an 'authenticator' be placed on a post that prevented bots from voting on it.
Basically, a captcha, or 2FA, reveals a public key which allows one to vote on the post. Without the key, the blockchain does not allow the vote.
@netuoso, according to @timcliff, says that captchas can be solved. I have no doubt this is true. I also note that they are in wide use across the internet, and greatly reduce the amount of spam, scams, and bots.
It isn't perfect, but it will pretty much end the overwhelming of human curation by bots.
Now, I have forthrightly answered your question. Please tell me the honest truth why you don't want that to happen.
Thanks!
RE: The Difference Between Promotion and Curation, and Killing All Bots