I personally feel that Mozilla treats Linux users as 2nd class citizens. When in reality, Linux users have been loyal to Mozilla, and we also understand the importance of Open Source and the Open Web.
Problem: At this point, if you attempt to download the Mozilla VPN for Linux, your only option is Ubuntu, and it has to be downloaded through a PPA repo that installs a .deb package. This is very unfair because Ubuntu is no longer the most popular Linux-based operating system. Fedora and Arch Linux are attracting new users.
Solution: When it comes to Fedora, the .rpm packages already exist on your Github repo.
All you have to do is to make them available on your website. Or publish the Copr repo created by @dannycolin. It works just like a PPA repo but for Fedora.
In fact, I installed the VPN client through his repo and it works just fine on Fedora 35.
Even Better Solution: release this VPN client as a Flatpak. Flatpak is the defacto universal package format for Linux, so it would benefit the entire community.