Zirconium is a ublue image for Niri desktop, just like bazzite, but it doesn’t contain gaming specific stuff. The maintainers there were working on a bazzite+zirconium image called zirconium-jackrabbit but it seems defunct now. Discord for the project is here: https://discord.gg/2sj4JbbqK

If anyone is, yes it would be executives. I think again it depends on the industry. You won’t catch a tech ceo dead in suit unless they’re testifying in front of congress, for example. But in more traditional industries yes

Most office jobs, no. Certain industries are hold outs, but it’s very rare to see office workers in suits nowadays