At the very least it does add context menu entries for compression to files, apart from "open with" obviously. That might already the reason right there.
That likely depends on the desktop environment. I have packages installed on my steam deck that add context menu entries, so clearly it's not impossible (my system still remains read-only, though I've been thinking about using an overlay like rwfus to get some new native packages, due to annoyance of self-management of self-built and downloaded ~/.local stuff)
