This is incorrect. I am a digital nomad w/ a PO box and it's not accepted by many financial institutions that do KYC. My credit union requires me to list a "real" address. My credit card company required me to list a permanent address as well. Any time there's a fraud alert on my of my accounts & I have to provide proof of residence, there's a good chance submitting a document w/ my PO box will not be accepted.

I use my dad's address for my permanent residence. But since I'm not on the utility bills, it can be hard to provide true residence. In one case, I had to write up a lease agreement & buy renter's insurance to get one of my accounts unlocked. They wouldn't accept a bank statement, my driver's license, or voter registration card. It was a real pain in the ass, and resolving it took a good 2 weeks.