The Mastodon instance is provided with no warranty. There is no guarantee of availability. It could be shut down tomorrow. No money's exchanging hands and nobody owes anybody else anything.
And imagine suing someone over a Twitter clone called "ligma". You'd look silly.
"pissed everyone off in literally record time" - Recommended by 10 out of 10 people who, for some sad reason, have a dedicated column up to watch #fediblock.