The situation reminds me a little of the quantum computing skeptics who say: scalable QC can never work, in practice and probably even in principle; the mainstream physics community only thinks it can work because of groupthink and hype; therefore, we shouldn’t waste more funds trying to make it work. With the sole, very interesting exception of Gil Kalai, none of the skeptics ever seem to draw what strikes me as an equally logical conclusion: whoa, let’s go full speed ahead with trying to build a scalable QC, because there’s an epochal revolution in physics to be had here — once the experimenters finally see that I was right and the mainstream was wrong, and they start to unravel the reasons why!I don't draw that conclusion because I don't believe in that "epochal revolution" either.
When the LHC failed to find supersymmetry particles, did we have an epochal revolution telling us why naturalness and SUSY and unified field theories failed?
No. For the most part, physicists went on believing in string theories and all their other nutty ideas, and just claimed that maybe bigger and better accelerators would vindicate them somehow. That will go on until the money for big projects runs out.
The cost of accelerators is exponentially increasing, and the money will run out. They need an accelerator the size of the solar system to get what they really want.
Quantum computers have already had 20 years of hype, billions of research dollars, and some of the world's smartest people working on them. So far, no quantum supremacy. IBM and Google have been promising that for over a year, but they are not even explaining how their plans went wrong. This could go on indefinitely, without any additional proof of the folly of their thinking.