Some countries ask for web filters to be available. This could be indicated by some sort of freedesktop standardized setting for user accounts, or similar.

If something like a "please web filter for my child" account setting is ever implemented, it might be useful to add a rating that indicates "this app allows access to web pages and doesn't respect or implement any web filters if requested". This would allow some mechanism where something like GNOME Software could take this into account and for example not list the app.