"But why trust Fedora?"

[renehoj]

The devs picked the distribution they used.

[qubes-users] Is Fedora Really A Good Choice For QubeOS?

Actually it was Rafał who liked it! I think the choice of the distro for the AppVMs is of negligible importance. Most of the desktop functionality (like the desktop environment) is removed by Qubes anyway. So, it just comes down to the pkg manager, specifically to the yum/rpm vs. apt/deb religious wars. The choice of Dom0 distro is of more concern, and ideally we could have a custom distro here (at least a forked one and maintained by us). But the problem is that, at least …