I am currently using Linux Mint (after a long stint of using MX Linux) after learning it handles Nvidia graphics cards flawlessly, which I am grateful for. Whatever grief I have given Ubuntu in the past, I take it back because when they make something work, it is solid.
Anyways, like most distros these days, Flatpaks show up alongside native packages in the package manager / app store. I used to have a bias towards getting the natively packed version, but these days, I am choosing Flatpaks, precisely because I know they will be the latest version.
This includes Blender, Cura, Prusaslicer, and just now QBittorrent. I know this is probably dumb, but I choose the version based on which has the nicer icon.
Containerised everything is the future of computing and I think we’ll look back on how we do things currently with horror!
But yes, I am slowly starting to use more contained desktop applications. Server-wise, everything I deploy is now in containers.
I am happy that it is becoming more common. The first time I learned about containerization was QubesOS, which is great, and I still may try it.