Canonical might only care about Snaps, but like I keep saying you can just enable Flatpak and get it from there. Only if you want debs you’ll have to move away.
That’s not the point.
The point is that sometimes the sandboxing can break certain features in certain software. And if the software is only available as a snap or even flatpak, but not the original deb or rpm, then you’re stuck with a broken software.
This was the case, for example, for my browsers and some of their extensions that need to communicate with external tools like media downloaders or even password vault access, like keepass.