Yes, it is a prevalent pattern to see folks rolling rare vintage tubes into cheap chi-fi or even cheap Schiit amps, especially headphone gear. Especially 6SN7 and 6922. It always rubbed me the wrong way too. What a waste. On the upside you can buy their tubes after they move onto the next flavor of them month, but a lot of times it will only be a single.
Anyways, the current tube shortage / price crisis really mainly affects power tubes, which don’t have vintage alternatives available in quantity.