That sounds a lot like Boeing Employees Credit Union and is one of the dozen or so reasons I can't understand why they are so popular around where I live.
I use Seattle Credit Union (formerly Seattle Metropolitan) and not only do they handle cash in branches, they were open the whole pandemic though some branches needed an appointment to make sure someone would be there.
It just amazes me that a credit union can get so popular while effectively outsourcing (for example, when someone like you would go to "a non-cashless credit union") a basic function of banking. I know of a couple of credit unions in the Puget Sound region who have dropped out of the co-op credit union network in response to BECU only doing shared member activities via their ATM. BECU's customers would turn around and come to those other credit unions, increasing their load.