Ok then how can you say that Bitcoin mining is wasteful? How can you be certain that it will not lead to massive productivity gains? What is the standard you

Ok then how can you say that Bitcoin mining is wasteful? How can you be certain that it will not lead to massive productivity gains? What is the standard you are comparing Bitcoin to for resources required to enable censorship free payments? And how do you know precisely how much censorship free payments is worth now or at any time in the future?