Certainly, allegedly, one justification for those códigos in the early days, which can seem so much a relic of a past culture as we re-invent new forms. Perhaps a return to piringundines and a collection of tokens during some cortina? Or maybe just '10¢ a dance' (adjusted for inflation).
It depends heavily on one's own time, aptitude, intellectual capacity, and financial resources.
By time, I primarily mean the years one might have left. If you feel lonely in your later years and discover your love for tango, then it might be wise to book a tango package tour with "extras" - sooner rather than later - and to budget an adequate payment for these "extras", however.
Well, from our perspective, Argentina is a relatively poor country where mutual support is often essential. So, while "Tango Argentino" may lack a soul, Argentinians certainly do not. And the taxi driver might know a tango hostel; the tango hostel will have a practice room where you can meet tango teachers. If you have negative experiences at milongas, you might ask for help. If you spend a lot of money on accomodation and private lessons, they will find a solution. And perhaps that will be the taxi driver, who also happens to be a taxi dancer as a third job. No one is being embarrassed or exposed, commissions may be involved behind the scenes.
My ex-girlfriend is a (semi-)professional dance therapist. That's a privileged situation, of course; she essentially "imported" two Argentinian tango teachers, providing her studio and her contacts as a bridgehead. One of the teachers has been to Europe several times, found a partner here, and is doing well in the tango business. Word gets around, such will be naturally helpful in the milongas of BsAs.