Most suicidal people just want to flirt with the idea a bit, it's better to allow them to go through that process openly so they can recover faster. For those who are serious, it's not clear that forcing them to stick around is better either IMO.
Spoiler alert, federated networks made up of small-time server owners are extremely vulnerable to both human and AI driven propaganda, dissemination, manipulation etc.
I predict that unfortunately lemmy and the other fediverse networks are doomed. We have maybe a few years at most, then only paywalled serviced will be able to stand up against the onslaught.
Would you be willing to pay like ~$2 dollars a month to avoid this? Or are you expecting solutions for free?
I'd shoot my kids if they DIDN'T turn out to be communists! Sorry, not sorry!