I only use small preamp type tubes that last thousands of hours...such as 12ax7, 12au7, and 5751's...which I have plenty of in reserve as they were all bought several years ago. So not really effected by it.
Tubes becoming hard to get?
An article in today’s WSJ talks about tubes for both guitar amps and stereo gear becoming scarce due to Far East and Ukraine/Russian tensions saying most tubes originate from China, Slovakia, & Russia. As such, people are beginning to Hoard and retailers are beginning to limit purchases.