I understand entirely about a well-used bass feeling good, sounding a bit 'lived-in', as it were - I've worked in a guitar shop and played them and worked on them. I just prefer new when possible, and then gig it until it feels the same as those old ones. My black MIM Precision has done hundreds of gigs, is 4 years old, and I look after it. It plays beautifully, the fingerboard has worn in nicely, and, to me, it sounds good also.
Just so happens my no.1 (the51RI) was not new to me, although it was almost completely unused...
What really gets my goat is the notion that the older stuff was 'made 'better'. Yes, the wood has aged, and this may or may not affect the sound. 70s 'thick-skin' Fender finishes don't age or change colour like nitro finishes (exception: some of them were even then clear-coated with nitro laquer). The consistency of build cannot have been other than more variable than it is now, even at its best. 70s and early 80s Fenders, now well into vintage territory, could be truly dreadful, and there were certainly more duds from that era than any other. But there were also good ones.
As the Strad post mentioned, they sounded better not neccessarily because of wood or basic craft, but because a new method was also introduced with the explicit intent of improving the tone. Robert Benedetto and Bob Taylor have said, and proved, that close-grained tonewood, although more consistent, is not remotely needed to make a good instrument, even a craftsman-built acoustic guitar, and Mr Taylor has built several first-rate acoustics from pallet wood, just to prove the point that it's build that counts. And build today is more consistent than it ever was before.
It's entirely subjective, is the point I'm trying to make. There's no science whatever that says this is better or worse than that, and no matter how hard you look, or who you listen to, it's not likely to change any time soon...