There are big wishes for Signal to adopt the perfectly working Flatpak.
This will make Signal show up in the verified subsection of Flathub, it will improve trust, allow a central place for bug reports and support and ease maintenance.
Flatpak works on pretty much all Distros, including the ones covered by their current “Linux = Ubuntu” .deb repo.
To make a good decision, we need to have some statistics about who uses which package.
I think they just gave very valid reasons to include sms in signal, adoption. It took me years to get my contacts on signal and I was finally at the point that >80% of my messages were encrypted, that dropped to <10% the day sms was dropped. If I refused to use sms I would effectively be cutting contact with my family.