Yes, it’s encapsulated. You have to explicitly go into desktop mode to even install stuff. When you do install stuff from the repos it goes away next update to ensure a sane environment. You have to install stuff from flatpack to keep it. There are ways around it but there are also ways to root your Android phone. It’s about equal in usage.
The Steam Deck is a locked down environment?
Yes, it’s encapsulated. You have to explicitly go into desktop mode to even install stuff. When you do install stuff from the repos it goes away next update to ensure a sane environment. You have to install stuff from flatpack to keep it. There are ways around it but there are also ways to root your Android phone. It’s about equal in usage.