Stable churches? Call me cynical but I’d be surprised.
Perhaps stable in encouraging you to wear robes?
Tunics I’ve seen. I’ve never seen any group wearing robes.
It was a little tongue in cheek anyway.
Robes might not be spiritually advisable anyways.
I ran into it last at KFW, 2019 I think.
I mentioned it to a friend, who informed me she asked him he was wearing robes, and the answer was because he believes in male modesty. That seemed reasonable to both of us, albeit peculiar in its manifestation.