Spare parts for the Bafang Ultra ?

I see a bunch of posts around parts for the Bafang Ultra - how real is this issue ?

How many failures have people seen with the Ultra ? The answer is probably non-zero, but with motors (even BBSHD) , do users see a large amount of maintenance and need for spare parts ?

Curious if people have anecdotal experience / data for this ?

Considering parts for BBSHD are a struggle to purchase, I’m not hopeful. Bafang sucks at parts supportive. And every new motor gets all the beta testing done by customers.

Impossible, can't even get a chain ring or crank arms unless you are buying a full container load from China.