These bots, if they do exist, wouldn't be operated by Facebook. It's a market-based ad bidding system. If 80% of clicks are worthless, clicks will be worth 80% less, and advertisers will bid accordingly. Facebook won't make anything in the long run by doing this, and there's clearly risk of getting caught doing something illegal.

If there is a bot, it's likely one of their competitors, though even that seems unlikely. One must be logged into FB to see ads, and I'm positive Facebook has some click fraud detection. They'd almost have to notice a number of accounts clicking the same ads over and over. I guess maybe if Facebook's CAPTCHA is weak enough and a bot was creating an account, setting up the proper interests to see the ad, clicking it, then repeating... Seems unlikely though.

Also none of this explains why they're taking down their Facebook page. One does not need to buy ads to have a Facebook page. You can even have it automatically update from Twitter. They could leave it up there and get free publicity from it and simply cancel their ads.

This whole thing seems like a sham for attention to me.