No, I’m suggesting that you don’t make this a setting on the group page, but one site wide setting that contains all the groups that are inheritable instead.
A similar setting is Admin - Settings - Users - anonymous posting allowed groups. It’s not a checkbox on every groups settings page “allow anonymous posting for this group”, it’s one setting with all the groups that allow anonymous posting,
or Admin - Settings - Posting - here mention allowed groups instead of a checkbox on every groups settings page “allow here mentions for this group”.
It’s easier to implement, it’s less database clutter and it provides a better oversight to the forum administrator.