^All these issues are being discussed already.
In fact, Government of India just gave instructions to telecom operators, asking them to do it the old fashioned way: Aadhaar not must for mobile SIM, says govt
Also, according to the Supreme Court order, the "deadline" for linking Aadhaar to bank accounts and SIM cards has been indefinitely extended: After SC order, you DON'T need to link mobile, bank account with Aadhaar by March 31: Everything to know
UIDAI did not say link mobile number and bank account. They just provide the service, so there is no one point of contention, any action has to be initiated against the individual entities that require the linking.
Linking to bank accounts was made compulsory as a measure to prevent money laundering. The original ruling is in this Gazette.