It used to be that you would do a search on a relevant subject and get blog posts, forums posts, and maybe a couple of relevant companies offering the product or service. (And if you wanted more information on said company you could give them a call and actually talk to a real person about said service) You could even trust amazon and yelp reviews. Now searches have been completely taken over by Forbes top 10 lists, random affiliate link click through aggregators that copy and paste each others work, review factories that will kill your competitors and boost your product stars, ect.... It seems like the internet has gotten soooo much harder to use, just because you have to wade through all the bullshit. It's no wonder people switch to reddit and lemmy style sites, in a way it mirrors a little what kind of information you used to be able to garner from the internet in it's early days. What do people do these days to find genuine information about products or services?
There just needs to be actually human eyes on this kind of shit. Especially if it's a subscription service like dude was saying. Algorithms will get gamed. Everything will get gamed. But a gamer can spot another gaming faster than anything I know of. You need a bullshitter to call ballshit on any and every letter-not-the-spirit of the rule, bad faith motherfucker out there. Ban hammer vigilance almost always wins out, and besides a person's data can be cross referenced to pings in cell towers. A crafty bot (maybe not entirely leeeeegal) can auto block from IPs around marked IMEIs, so wherever bitchass goes, if he's got his phone, no go.
And if you wanted too, by the time they got wise and got a new number, you'd already know their habits and have deduced the number switch anyway. People are amazingly, and frighteningly easy to identify by just a few repeated locations in a week.