Peertube isn't really a viable alternative. There isn't a substantial enough audience for creators and there isn't really enough content for an audience. I guess if you're one of the 100 people watching transport evolved that's cool but it isn't really a meaningful alternative. I suppose it could be supplementary, but why would creators want to drive their traffic to a site that doesn't actually matter for their visibility? I imagine the same probably applies to loops.

Also, like, with video you kind of want a reliable host that you know isn't going anywhere.

The rest are okay as long as you're not super worried about how many people are seeing what you post. Lemmy and Piefed are great for content aggregation and discussion, but they seem to be the only ones that at this point actually do anything that might be helpful.

I've tried Mastodon and while it's way better than Twitter it isn't exactly providing a way to reach a substantial audience. Personal websites are probably a better bet for ease of access.