In response to the OP. Yes they are and probably won't improve sadly.
The emphasis nowadays is on PCPs regarding the interests of the manufacturers.
But many of us, myself included remember the "glory days of the spring powered air rifle" and still collect and lust for the experiance.
Same with angling, I've just shelled out for a terrific 1980's glass trotting rod and an Allcocks Aerial reel and I can't wait to use them fishing local rivers for grayling !