Should appimagetool force certain checks, such as desktop file validation?

Trying to make this issue as abstract as possible, though it clearly stems from #1171, particularly [this comment](https://github.com/AppImage/AppImageKit/issues/1171#issuecomment-1160808418).

As a user, my opinion on this is rather straight forward: I love programs that prevent me from shooting myself in the foot. However, this can turn into a hindrance when the check itself fails, and the user is stuck with a non-functioning program.

The most obvious solution to me would be an option similar to `rm`'s infamous `--no-preserve-root`, to have the user explicitly opt into potentially stupid decisions. Full freedom for the user, no responsability for the developer.

Edit: feel free to move this discussion into whatever direction you think is most productive. I'm just here to get the ball rolling.