I pay $100 per year for a private mailbox near my apartment, registered under an LLC with a registered agent (not in my name and in another state) where I get deliveries in that name. that llc uses a fintech bank where I can spin up as many debit/credit cards as I want, I rotate them just like api keys. I also keep a twilio phone number that only receives texts with a webhook that goes to my discord. any sort of loyalty card etc goes under that number. I can enable phone calls if I need to, and of course a 2nd/3rd email account attached to this.

We've been dealing with different Amazons. Also, credit cards in my experience are built to deal with that stuff. Have you encountered protection issues by using your credit card? The only chargeback I've initiated was against Amazon and my credit card company handled it swimmingly.