“I’ve seen it first-hand” isn’t significant evidence because the frequency illusion effect is a thing. If you see dozens of ads a day and ignore them unless you notice them matching something you talked about, you’ll end up thinking ads can track what you talk about whether or not it’s true.

If you actually read the article, this is just a normal-ish (although peer-to-peer, which is interesting) free VPN, it isn’t actually oriented towards cheating. The funniest part is that if the article is to be believed, the “cheating” consists of simply increasing your ping. Which… you don’t really need a VPN for.