Yeah, I think it's absolutely BS to think that one has to have a vintage instrument to have their own voice. Plenty of folks (myself included) think Chris Thile sounded better on his modern Dudenbostel than on his 20's Loyd Loar mandolin.
Also, its not like these dudes are like "ya know, I'd really love to play a Strat but price on 60's Strats is out of my price range, so instead I settle for a jaguar since I need vintage and that's vintage in my price range". Nah, they'll settle for Custom Shop Strat. Which is to say a Strat is still a Strat, whatever decade it was made. All that said.
- The wood that was being harvested 60-100 years ago was different than that which is harvested today. There's not really any room for debate here.
- Wood matters. Argue about whether it impacts the plugged-in sound of an electric all you want, anyone that's played 1/2 dozen American Professional Strats from same year knows that they all vibrate quite differently in the hand, and sound fairly different played unplugged. That matters regardless of whether two guitars sound the same plugged in.
- So, yeah, I can't see how vintage guitars wouldn't be in a different category from modern stuff on more than just a vibes/feel level. How different are those categories? Dunno. Haven't played a whooooole lot of vintage electric stuff. Vintage acoustic stuff absolutely just sounds different than modern acoustic stuff. I've never played a pre-1960s acoustic that didn't just sound totally different to anything modern I've played.
- Vibe matters, and vintage electrics DO have a vibe. I have't played any "relic" guitar that actually feels like a vintage guitar. Some feel nice and "broken in", but not "old". The handful of Murphy Labs I have played didn't feel anything like my new catch, and definitely didn't SMELL anything like it:
https://thegearforum.com/threads/nvintagegd.7328/
- Probably the bigger issue is that with vintage instruments a lot more of the dogs have already been put out to pasture, so the likelihood of a vintage instrument being really good are much higher just because there's been a 1/2 century of sorting out the wheat from the chaff and what's left is mostly good stuff.