This hobby is kept alive by companies like Velo-Orange, Soma, Rivendell, Rene Herse, Nitto, Dia-Compe, Tange, etc who continue to make parts for classic bikes. Velocals too but they are gone now. Although maybe not their intent, but Sunrace and KoolStop likewise probably kept a fair number of old bikes from the landfill. Outside of these handful of companies the landscape is very bleak for C&V bikes. Look at the Chinese component makers. They make every component for the modern bike at every price point from cheap to dirt cheap. They make well regarded carbon wheels and power meters. If you want a 1X external BB crankset you get pages and pages of them on Aliexpress. But nothing for the classic bike. Not one thing. We don't exist as far as these manufacturers are concerned.
So Richie has a point. If we want to keep these classic bikes alive, we have to continue to make parts for them.