I....I don't understand. Why would you use Bazzite for software development and not gaming when user is not a gamer but just likes KDE?
you can literally put KDE on anything. Bazzite isn't friendly to installing anything that isn't a flatpak or whatever.
Just use a different distro. you don't need Bazzite. Switch them to like Fedora KDE or something.
And to people in this thread trying to push a camel through a pin hole...why? you're talking about setting up VMs and Distroboxs or just using flatpaks on Bazzite when the most painless solution is to just switch distros.
You picked the wrong distro, just switch them to something more appropriate for what they want to do.