To this I say: Hey kids, go grow your own groups using free/libre open source decentralised, distributed post-blockchain holochain-powered https://moss.social
I'm not sure I fully understand - whilst I agree there's been useful legal work, we now have such a plethora of licenses I ended up having to back what I'd call basic common sense when someone was suggesting using a highly restrictive "community" license that had ridiculous intents such as saying you can't use it in this particular industry because that industry is "bad".
The reason Free/Libre Open Source Software wins - and always will do in the long run - is because the four freedoms are super-simple and they reflect how the natural world works.
The last time I heard a comment along those lines I was attending a session by an Open Source person and up on screen they had a picture of RMS dressed as Che Guevara.
All those silly ethics, they get in the way of the real work!