Seaver, Blyleven, Feller, Palmer were all "old timers" that routinely pitched around 300 innings, not including playoffs. And more recently you have most of the 80's and 90's guys like Carlton, Jack Morris, RJ, Clemens, Schilling, Pedro. And even guys who had TJS like Smoltz and Gooden were in their 30's before they got injured.
There is certainly a disconnect between eras. Maybe it's more sliders/curves. Maybe it's the throwing style. Maybe current pitchers are trying to hard to get spin. Maybe more rest isn't as beneficial as we think. Maybe it's all just coincidental. But I don't agree with the notion that guys now simply throw faster now.
Check out Verlander's thoughts yesterday when asked about the recent injury bug to pitchers.
He gives some good thought out points.