Fog on New recordings

I don't know if anyone noticed .....on new recordings, vocals are much less distinct than before.   I compared Paul Simon, Norah Jones, and others......the older recordings have cleaner diction or something.  ...I used to enjoy Paul Simon's lyrics..always had interesting and poetic points of view.....  I can hardly understand what he's singing now.
I have noticed that vocals are more "in the mix" these days. It used to be vocals were mixed more up front.
Even with remasters, the vocals are less up front compared to the original. But this might be due to high compression.

This may be unrelated to your observation.