rsync is not really comparable to syncthing, it’s like comparing Excel to C++ or something. I need to be able to get lay people to install and use it, and syncthing has a UI that allows this while even I would have to do some work to get rsync to do everything syncthing is doing for me right now.

is there a more efficient alternative that isn’t centralized?

the tl;dr is that they are not really feminists, and they use feminist-sounding rhetoric to justify anti-trans views, they’re basically just anti-trans activists.

For more rabbit-hole, ContraPoints has a video about “Gender Criticals” (synonymous with TERF): https://www.youtube.com/watch?v=1pTPuoGjQsI

Her video on JK Rowling would be a good follow-up.