Comment by tranq_cassowary

Phones, to just give one example, at least have fine-grained run-time permission controls while on Linux apps can just access anything the user can, except if you use something like Flatpak which gives you sandboxing but the quality of that sandboxing is still worse than Android 4.4 KitKat. How can you protect your sensitive info without such permission controls that gate access to your personal data?

Note that this is just one example, there are also other problems with traditional desktop OSes and a large portion of desktop hardware.