They started this way way back on older chassis too, they keep flip flopping back & forth with these things.
Imho, if someone had a car, they want to fit said item, as long as they validate its their car & they provide all the documents, then why Audi wont install is for me, quite ridiculous.
Not every 2nd hand part is stolen, cars get broken up after crashes.
There are certain circumstances I can understand refusal, but most are authentic & non stolen.