Am I missing something here, there seem not any response yet to the lack of moderation capacity for group Admin. 

I had posted about Group Moderation long before now but seem not to catch the reasoning of the UNA Team. 

https://una.io/page/view-discussion?id=3963

The lack of control in the Group management makes it a ground for junks where it's a group targeted to Community membership.

Every Community has the good, the bad and the ugly. Admin must be empowered to pre-manage posts before it goes live. It's even supposed to be a site-wide capability.