Do you have any actual criticisms of the policies he proposed?

> systemic student and other debt

The student debt problem is due to student loans not being dischargeable in bankrupty; this is certainly not something Hayek argued for.

>by monopolistic privatised healthcare

The cost of healthcare is to a significant degree driven by artificial limitations on the supply of doctors due to the government granting the AMA a monopoly on deciding who gets to be a doctor (and artificially limiting the number of medical places per year). This is also not something Hayek supported.

>fraud/boom/bust cycle that has replaced real game-changing technological progress

A lot of people would disagree that there has been less technological progress in the past decade or two than in earlier time periods. Even a decade ago, it was unthinkable that a machine could beat a human at Go.

> set out to destroy its really rather successful economic record of relative stability and prosperity.

The US experienced a higher rate of economic growth in the 1800s and early 1900s, before Keynesian policies were adopted, than it did afterwards.

The Mont-Pelerin society was established in 1947 by Hayek to promote more liberty with the world elites. There are pictures of him on the first conference with Mises. I'm genuinely curious what relative stability and prosperity you refer to. This was after the second world war.