I think there's something else to consider, maybe the brothers growing beards just don't give a sh*t any more about striving/competing/groaning after privileges. Here the elders (who are all really old) have been having a hard time getting brothers to care enough about competing for privileges. A bit of a shift, methinks, from the old days.
Once you don't care about privileges, they have much less control over you. And if you're a brother, you grow a beard! If they still want to give you a privilege, you keep the beard, and read that Watchtower
Wow....that's me in a nutshell 😋