Privilege escalation (superuser capabilities) and RBAC ought to be viewed differently, IMO.
There's a place for true superusers, such as auditing, where no stone should be too heavy. But mostly for securing systems, we want RBAC, and sudo is abused as a pile-driver where only a mallet was needed. Polkit is more of a proper policy toolkit.
That’s a valid choice. I’m just saying that you should pick ideally one tool for that class of work. For example, if you support one tool for Mac and Linux users that’s probably worth more than supporting two similar tools even if one of them is better.