The only exception to this rule, is when the voter is a public vote-selling bot, in which case the associated reward with the vote will be sent to the author instead of the bot.

So if you post a video on @dtube and then buy upvotes, you will end up getting paid by @dtube.rewards for the upvotes you purchased? That seems like it will make buying upvotes profitable. It would make more sense to just save the rewards for non-bot upvotes.