Not only it's plenty of cheaters, it's incredibly full of people who defend them, even in front of proofs like accounts banned, ridicolously high ratings or victories against Grandmasters. I've been in four different chess groups (two on Chess.com, two on FB), it always happens this kind of stuff (they were italian groups, but I think it's the same for other countries, I don't see why it should be different). Why they defend cheaters? Some are in bad faith and, well, I don't really understand why they do this... some just don't care if someone cheats... some are naive and believe to cheaters' lies. Those people often even attack you (inventing stuff about you or accusing that you're actually the cheater).
I tell you just the last episode. I receive from lichess the notification that I lost to a cheater and I have my points back. I leave the group (the cheater is the group leader and captain, everyone calls him Master and he even offers lessons, this guy apparently continuosly creates new accounts because they ban him all the time... he says they ban him because there're jealous people who report him, and they believe him LOL). A person of the group contacts me asking why I left, I answer that was because their leader is a cheater. She gets mad, apparently I'm stupid and I don't understand that when people have high ratings just being reported leads to ban (???). "I show you", she says "Create a new account, go up to the rating of 2200, I'll report you and you'll get banned". Knowing multiaccounts are not allowed I tell her to directly report my main account. I add that I allow her to make my account massively reported by all the people she can get. "Let's see what happens", I say. "Ok", she answers, then blocks me everywhere and totally disappears xD Obvious bad faith! This is just to show the kind of people you find in such groups. AVOID!
I tell you just the last episode. I receive from lichess the notification that I lost to a cheater and I have my points back. I leave the group (the cheater is the group leader and captain, everyone calls him Master and he even offers lessons, this guy apparently continuosly creates new accounts because they ban him all the time... he says they ban him because there're jealous people who report him, and they believe him LOL). A person of the group contacts me asking why I left, I answer that was because their leader is a cheater. She gets mad, apparently I'm stupid and I don't understand that when people have high ratings just being reported leads to ban (???). "I show you", she says "Create a new account, go up to the rating of 2200, I'll report you and you'll get banned". Knowing multiaccounts are not allowed I tell her to directly report my main account. I add that I allow her to make my account massively reported by all the people she can get. "Let's see what happens", I say. "Ok", she answers, then blocks me everywhere and totally disappears xD Obvious bad faith! This is just to show the kind of people you find in such groups. AVOID!