100% agreed. My Mastodon instance is by invitation only and limited to very few people. We all know each other and know what to expect of one another.
There are really nice rules on other servers and folks look out for each other. Sure, on occasion there’s trouble on an instance but folks sort it out one way or another. You can always change Mastodon Instances to find one more in line with your beliefs. https://mastodon.ie/@davey_cakes/113797444062623339