Back in the late 2000s-early 2010s you could grab some Verizon bubble pack flip phones and just dial an activation string on the handset itself and it'd set up a new phone number for you and you'd just have to go add airtime with a prepaid card or credit card without having to provide anything.
Some of the LTE tablets even powered up and put you into a walled garden with data (heh, DNS tunneling worked out of it) to let you sign up for a mobile plan out of the box.
When I did some activations with PagePlus with an actual dealer-level account, it cost me nothing to activate a 'customer' handset and the only info I had to provide on the activation screens was the phone's serial number and the requested ZIP/area code for activation.
And fine, okay, the FCC will force American telecoms to require IDs, but nothing's stoping Redtea Mobile's foreign eSIMs from roaming into the US for data connections. You're just one eSIM global roaming provider away from bypassing all of it!
So basically people from Africa won't be allowed to use their phones in the USA by order of the government? (If they can even get into the country without ending up in an ICE camp, of course)
I had reason to pick up a couple cheap pre-paid phones at a gas station once. I wasn't asked to give an ID to anyone to buy them, but once I had them I needed to call a company to activate the phone and they were very particular about what phone number it would work from. It had to be a landline. Payphone wouldn't work. My work phone didn't work. It was difficult to track down a phone line they'd accept and even then one of the phones refused to register.
It seemed to me like they wanted to make sure they could tie the phones to an individual through activation.
I used to buy test phones for software testing at a bodega where they had a laundry basket full of phones, and they would sell prepaid SIMs no questions asked.
That said, I don’t think its a problem whatsoever and we shouldn’t have laws restricting it.