You specifically called out Cedric and said he "never had that in Philly". That's a clear shot at Rojas who is a fine defender.
I don't get the tendency to dismiss players on other teams. Other teams can have guys that are good.
You'd compare those guys to their peer groups in other eras. How many top 100 players are over 35 right now#? How many were in the steroid era? Not a great tool but if you see an odd spike it might mean something.
I don't think anyone thinks it was a panacea. What you took, how your body reacted, what work you did ect ect. Tons of factors in play.
My recollection is a lot more guys being productive at 35+.