You may be right, but in my experience the "stock replacement" parts available today are not as good as the OEM stuff, and in most cases is garbage.
Hell, the factory style of strut rod bushing that came out of my car is not available today - I'd have to use junk china-moog parts to replace them and even if they fit (they won't) they won't last.
In the past 5 years, the decline in quality of parts for older cars has cratered. It was bad before but good parts was a matter of brand - not anymore IMO. Even moog has totally dropped the ball. Kinda makes trying to piece together an OEM style suspension a non-starter, at least to me.
So far, the poly parts have all been transparent as far as ride feel - but I give credit to the new shocks because they're better able to damp the freer moving suspension that poly gives me.