very interesting essay, albeit a western-centric one.
As someone who was brought up in the east, hi-fi was/is a lot more pluralistic and non partisan as it is in the west.
Brands such as Luxman, Shindo, Ureshi never stopped making valve amplification, and analogue/vinyl might have declined in the mainstream market but was vibrant within the community, not as a clique within a clique that it was in the west.
"Mainstream" publications like Stereo Sound in Japan have always devoted at least 30% of each issue on "vintage" hi fi, alongside the FOTM.
Well, that's an interesting point, and the ideal response to that eastern interest would have been that the Japanese had taken that level of avocation towards generating a domestic industry of making highest quality audiophilic vacuum tubes on a par with their audio equipment design and widespread consumer passion. Instead, however, we have a current situation where the main viable source of top quality audiophile tubes is the dwindling stock of 'NOS' western tubes (WE, RCA, Siemens, Mullard, Philips, etc.), manufactured during the heyday of vacuum tube technology.
So now current tube manufacturers basically tout their tubes as successful clones of these earlier tube types at best, with the reality somewhat mixed and generally being something less, ± converging audiophile consumer opinion. These contemporary manufacturers come from the lagging technology countries where these facilities still are operational (e.g. Eastern Europe, Russia, China), with the Czech ones at the consensus apex. However, their tube costs are commensurate with what they feel the market will bear nowadays, and the others representing some degree of sonic compromise, regardless of cost.
It's not a happy situation for current tube gear aficionados, what with contemporary open stock tubes of something less quality and a 'wild west' type scenario of spot market pricing, dubious 'NOS' status and/or legitimacy, unvetted sources, and finite diminishing stock of the older manufactured tubes driving pricing of all to disproportionately expensive and beyond.