Why can't you? They don't want to provide info for a credit check, you want human accountability. All that requires is for them to use a debit card for whatever service (prepaid or postpaid). Law enforcement can trace that if needed. No need for credit checks or really any other information directly in the hands of the telco.
I don't think it's necessary to go this far. The provider could indicate something like "CANNOT VERIFY NUMBER". I imagine most people would block such calls.
I would like anonymous political posts to be untraceable by the government.
I can't even get all of what I want.