So far, I really like it. Of course, I had to adapt myself to new OS habits (using run0, using rpm-ostree, etc.)
I did see some installed apps not running or not working correctly but 98% of the cases, all roads lead to hardened-malloc. I fixed Steam by installing it as a Flatpak and removing hardened-malloc usage by using Flatseal. For Brave, I haven’t fixed it yet but it seems like it’s a problem about ptrace but I’m not sure how to fix (I’m using the RPM version).