I have been doing precisely that. You have your personal number and the secondary number that doesn't have to be attached to your name if you want. Ofc law enforcement and telecom companies will be able to trace you based on cell tower locations and phone model.
Pro: An extra disposable number to give out whenever people ask you for "we need your phone number for ShittyDiscount". Whenever the spam calls get annoying I simply pop it out and place another prepaid sim.
Con: Phones with dual sim support can be rarer to find and be more expensive depending on your country.
It sounds like a name deliberately chosen by the author writing whatever techno-political thriller novel they're working on.