If you see lots of accounts with repeated same comments, then I guess it's a scam. Although it is already so obvious that it's a scam, but some desperate people, or those who're quite naive and don't know much might get interested in those comments. I suggest that you should never believe in those kind of things, since I can guarantee that those are fake. Even if you contact them and they ask you money, as long as you don't give it it's fine though. Or maybe they're asking for your wallet and such, if you don't give them anything, you won't be scammed. But if you believe and give or do what they want, you will get scammed for sure.