I have tried Mastodon off and on several times. For the few amount of good posts I've found in my interests (art and music), venturing out of those interests feels as if I'm wading into a toxic sludge of angry children who can't see beyond their nose.
It seems to be that the Twitter format leads itself into being a great place for angry people to constantly barrage their woes at the immovable world [0].
I understand that the world is cruel and unfair, but I also do not want a constant 24/7 cry of lament that only people who meet every criteria of every type of victim-hood can have a bad day and anybody else is an evil pig who doesn't deserve to live, let alone speak. This can be seen in both to the left-wing and right-wing instances as they both see themselves as perpetual victims from those in power (police, companies, government, soceity on the left, and media, companies, government, society on the right).
This kind of vitriol is already seen enough on Twitter. Seeing it even more so in self-enclosed echo chambers like some Mastodon instances just drives away any potential for normalcy, and therefore realistic ideas or normal conversation coming into their community. The loudest voices drown out others, claiming to have the right answer before they know the question, and not hearing out any arguments or facts that could possibly counter them.
I wish the best for those who join, but hope we find better means of communication than what is currently here. Perhaps a method where there is more talking and hashing out ideas rather than following trends and hashtags.
[0] Somewhat reminiscent to this video by The Onion: https://www.youtube.com/watch?v=jjonGtrCyVE