This is about Company A removing Company B, C, D, & E from the search results so that Company A gets all the sales and leads from that day. Company A would be happy if it scares them away permanently -- then they don't even have to pay the Hacker to deplete their daily budget anymore.
These particular hackers obviously have a service that Google's Invalid Clicks detection cannot pick up and it's successfully depleting advertisers' budgets -- hence the positive reviews they have.
These particular hackers obviously have a service that Google's Invalid Clicks detection cannot pick up and it's successfully depleting advertisers' budgets -- hence the positive reviews they have.