people will fear that - in a way or another - you may tamper those hardware wallets since you have physical access to them.
Since OP is using Amazon lockers, I don't think he ever gets to touch the hardware wallet (or the box). Unless he works at Amazon or has someone on the inside, but that brings us back here:
even from Amazon it seems to have happened to receive HW with seed already in
I'd say the risk of a receiving a compromised hardware wallet when ordering from OP is the same as when you order from Amazon directly. I've received fake products from Amazon in the past (not related to Bitcoin, just cheap knockoffs), so clearly their quality assurance system isn't perfect.
The next risk is trusting a Newbie, but I like the idea of improved privacy.