OT - Permanent Press clothing?

It seems to me that the polyester/cotton mixes are being replaced more and 
more with just cotton, that supposedly is still "wrinkle free" (and
doesn't 
need ironing).    Has the cotton technology really improved to that point,

or am I reading more into this than I should be? (for permanent press
****rts 
and pants, for example)?

It seems harder now to find those older cotton/polyester mixes for ****rts 
and pants on L.L. Bean and Land's End, anymore.    They were typically
like 
60% cotton, 40 % polyester, for example.   (And the polyester part made it

permanent press)