I’ve got a PRST-1 languishing in the shed for commuter duties, IMO it was fine for XC, tracking beautifully over small bumps but when the pace was upped it would struggle and I went OTB more than once as the front plunged through it’s travel.
I think that conventional tele’s have had 70 odd years of R&D by a lot of manufactures and the linkage driven suspension has had hit and miss R&D over the same time. Perhaps if the same amount of money/time had been thrown at linkage systems they would not be seen as the quirky, sometimes flawed system that they can be.
Market forces/inertia have also influenced the direction/fashion of the motorbike/cycle industry.
However a 140mm travel DRCV shocked modern interpretation of a PRST would be very tempting.