If you purchase a vote, the curation reward from that vote goes to the bot. Not you. And voting bots rarely give any significant profit in the first place. They get you exposure, additional upvotes from the community and increased followers. But the profit margin is more often than not very slim, if anything. Some will claim to consistently give profit, but in my experience it's never huge margin.

I've used voting bots on DTube posts as well so I'm well aware that it isn't profitable. Let's be honest here Joe, you're clutching at straws. I'm sure you know that you haven't ever made a profit on a DTube post where you've purchased votes. Just own up to that fact.