Best part about the federation is that you can leave

This may be a dumb question.

Why are we wasting time and money fighting over a legal clause in a piece of free and open source software? Can someone explain why someone would need to sue mastodon? I dont understand what rights people feel they need to demand from mastodon because you always have the option to use it how you choose.

Its expensive to draft and consult lawyers even when its pro bono. It expends time from mastodon project and the lawyers and there is only a finite amount of pro bono work the lawyers are willing to give.