Marco.
Now why did I have a feeling you might chuck your two pence worth in here

Okay, I’ll admit as an ex vinyl junkie who also had some pressings from the era you mention, SOME of them were stunning recordings given the equipment.
Of course, if you want to talk about quality recordings then perhaps we ought to change medium to ½ tape; get rid of all that horrible deck rumble and all those annoying clicks and pops

But,” - eons better than anything produced today on vinyl, CD or anything else....”
Well, frankly no.
You might get away with “better than many of today’s recordings” but “better than anything produced today”, not a chance, digital or otherwise.
May I suggest you check out some of the classical offerings from a few of the HD downloads in 24/96.
Oh, damn you can’t can you, you don’t do digital sound