Since the inevitable conclusion is impossibility of being anonymous, I think we should push to ensure full transparency for all. Otherwise, it ends badly for those not in power.
This was John Brunner's solution in Shockwave Rider. So does it work for preventing scammers and telemarketers? I guess it does since you would know who is calling you.
The problem with this is the asymmetry of power relationships - if everything is transparent it is very easy for a powerful group to use that against an individual but much harder the other way around
