tekrekon Since GrapheneOS ships essentially the AOSP launcher, if the AOSP launcher grows such an option it will not cost the GrapheneOS developers any effort.
In theory it could be productive to star an existing AOSP issue about this, or file a new one if there isn't one already, or to contribute such code to AOSP.
But because this wouldn't be a security or privacy enhancement it's unlikely to be done by the GrapheneOS developers.