I’ve talked before about the headcovering passage for women, and how they should have “exousia” upon their heads.
Everybody forgets that Paul has a long section in 1 Corinthians 9 about all the people who have “exousia” over various parts of life, and how Paul himself has to be careful not to abuse his “exousia” over Christians and over teaching the Gospel.
So if people are reading about “exousia” in 1 Corinthians 11, they shouldn’t have amnesia about 1 Corinthians 9, either.
I think what’s going on here is that Paul is calling for women to wear a sign of their authority given by God (and their husbands), like a court official’s hat or diadem. It’s “because of the angels” because Christian women will have authority to judge angels. Eve was naked when she was tricked by Satan, but other women meeting up with good angels were fully clothed and dignified. (And probably there’s something to do with the bad “sons of God” meeting up with the bad “daughters of Adam,” too.)
But it’s also “because of this” from the previous few verses, when Paul explains that woman was created to be “help” (the word also used for military allies or for God being our help) to man. (The sentence structure is “because of this, blah blah blah, because of the angels,” which suggests again that both reasons have equal weight.)
Possibly the “help” is also why women are supposed to appear “fully armed.”