[jake_the_third]

> nothing should be executable in the home folder

Says who? The purpose of a home directory to contain user-specific files including executables. Developers compile their software and write their scripts in their home directory. Even if we made the absurd decision that no file may be executed from the directory, there are many ways to cause harm by simply editing user-specific configuration files (e.g. in ~/.config).

Arguing that the problem is with executables in $HOME rather than Flatpak is incredibly delusional.