Existence of mods goes against the concept of freedom of speech. People aren’t prevented from directly using Twitter themselves. They’d be on 4chan if they wanted something as close to an unfiltered internet.
We wouldn’t be on our respective instances that have blocked off entire instances and communities if we wanted to consume unfiltered internet content.
When it comes to the average person it’s more important to be willing to jump to another platform if an alternative comes up than waiting for a perfect one that will likely never appear. Repeating the cycle of joining and leaving I think is better than just staying when it comes to the average person and mainstream platforms.