Lemmy sits a bit apart from the rest in that it doesn’t quite work for direct person-to-person interaction. Following Lemmy discussions on Mastodon is possible but clunky and Lemmy doesn’t quite know how to quiet all the @ mentions and things in comments made from Mastodon so they look really loud/busy. I can see Lemmy communities from Firefish but I don’t see any of the posts/comments (maybe I have to follow one first?). I’ve never tried following Lemmy from Pixelfed.
But each of those platforms has a different UI. The experience and features posting media on Pixelfed is much different. But I still have to setup a separate Pixelfed instance account if I want to make use of them. And my data will thus be spread across those instances. And people will need to follow both the Mastodon and Pixelfed accounts if they want to see both sets of posts. I’d love to just hat the one identity to manage with my content from all platforms associated with it.
I would say those numbers mean every election where voters are not able to vote by mail is an election with repressed voter turnout. Because now we know what turnout can be if vote by mail is an option.