The Flatpak is already packaged and works well. It just needs to be maintained from a person that joins the Inkscape community.
This would allow further improvements like Portal support and making the app official on Flathub.
Update: One might have been found!
Thats how packaging works.
On Android I use Obtainium, as the package manager deals with signature verification. On Linux, Flatpak is the only equivalent to Android apps.
RustDesk is the only Flatpak not from Flathub I use, because they have messed up permissions.
There’s also Pied, which hasn’t gotten around to submitting to Flathub.