Absolutely! Flathub is my go-to for installing desktop applications. It's designed specifically to distribute applications in
a distro-agnostic way, and it comes with a permissions system that lets you grant/remove permissions so an application
doesn't have access to more resources than it should:
Flathub is quite transparent with how it builds packages, and in the case of the Signal flatpak it
essentially unpacks the upstream .deb package and adds some modifications to make it work within the sandbox:
If you're already running Debian/Ubuntu, then the .deb package will be fine, but for any other distribution installing Signal
from flathub is almost always the best method. It's really no more trustworthy than any other Linux distribution where you
have downstream maintainers package software for better integration.
- Josh