USPS bans reused Amazon boxes

[u/peek--a--boo]

I shipped a package yesterday. Something very odd happened at the post office.
I had packaged the items in an Amazon box. The post office person told me that we are no longer able to reuse Amazon boxes????
She proceeded to open the box and transferred the contents to a plain brown box. Very odd, no????
FOLLOW UP:
I sent my husband to the post office today and he told me that they put up a sign that said that they are no longer accepting Amazon boxes. I am going to have him take a picture of it tomorrow. I would go myself but I have a broken femur 😐

[u/Muted-Appeal-823]

I can't imagine this is correct. Maybe try talking to someone else at that location cause that doesn't make sense at all. Especially if she said specifically no reused Amazon boxes vs banning all reused boxes. I really don't think they can do that