I didn't realize kimonos were considered "drag".
The upstairs neighbour in Breakfast at Tiffany's wore one all the time and he was just racist not transvestite (lol, that's called a joke).
What it is evidence of is a toxic heirarchy and who not to criticize. Yes a red flag that all is not what it seems at the big house.
I have no sympathy for bethelites full stop, but surely just being there for any length of time would send anyone a bit "eccentric".
Though it sounds more like to me he figured he had earned the right to not give a f**k.