I used the site for a bit. It had some serious potential as a reddit alternative, and was poised perfectly to reap the benefits of a mass exodus. Of course, I used it when it was called Squabbles less than a week ago, before the cringy name change to drop a vowel to be more like the websites from the early 2010's. I think the biggest hurdle for them was that they were a .io domain and couldn't host pornographic material, so the porn subreddits couldn't use the platform even if they wanted to. I think they recently switched to .co, so that might change, who knows.
I'm not sure I agree with the owner's top-down approach to website design and management. I had no idea about his anti-LGBTQ opinions until now, but that's one more reason to not to continue using it, aside from the fact that growth is basically reversing and very little OC is being posted.
When I hear "free speech purism", I immediately think that either the person/people who want that don't know the dark forces they are inviting, or worse, they do know and they want it to happen. Neither of those are a good look. Some speech absolutely should be banned from these websites for obvious reasons. People who conflate freedom of speech for consequence-free speech are idiots who deserve to be banned from everything everywhere.