All installations of X. X has no sandboxing. What most of these clickbait articles or concepts fail to mention is that at the very worst, you can get the same level of access that was possible before the sandboxing was added.
If an app has write access to your home folder, it has root. But with flatpak and portals, its realistic that direct home dir access will no longer be a thing for most apps.
If an app has write access to your home folder, it has root. But with flatpak and portals, its realistic that direct home dir access will no longer be a thing for most apps.