Don't carriers already identify their customers? I know mine did, shit I think they ran a credit check after I added a fifth line. Just block all incoming calls from poo land and we'll be fine.
Yeah you need to provide identifying information for most telephone transactions now.
I haven't been able to buy a SIM and activate it would some info for a long time. Doesn't matter anyway, robocalls aren't coming from cellular devices, they're coming from VOIP providers with terminations in India.