That said, I've bought a few modern albums which have been really nicely mastered; they've got that rich, deep '70s LP sound but available on a FLAC download without all the surface noise and rumble.
Also that section on the '60s loudness war underplays quite how LOUD some of those old mono 45s are... I typically set things up so my peaks are at -12dB when recording, and I have the odd mid-1960s single which will be pegged right up against the red if I don't adjust the levels. No wonder there were some pressings that were notorious for throwing the stylus out of the groove when people started chasing ultra-low tracking weights in the early '70s.