[Question] adding admin user relies on exec, shell_exec

The `bin/console bolt:add-user --admin` command line relies on `exec` and `shell_exec`. My guess is a lot of (shared) hosting providers have these options disabled by default.

I don't know much about PHP settings and server security , so I do not know if it is save to enable these commands but does this mean that some (a lot?) of users can't use Bolt4?