mastodon.social and mastodon.online are slowly being isolated as a growing number of instances are (or are planning to) defederating from them. Their moderation hasn't scaled up to match the influx; trolls of various kinds are registering there, using it as a base for attacking people and, when they are eventually kicked out, just creating a new account knowing that the moderation is too busy to spot them.
mastodon.social and mastodon.online are slowly being isolated as a growing number of instances are (or are planning to) defederating from them. Their moderation hasn't scaled up to match the influx; trolls of various kinds are registering there, using it as a base for attacking people and, when they are eventually kicked out, just creating a new account knowing that the moderation is too busy to spot them.