Oh, absolutely. I can't imagine throwing 90+ pitches 90+ mph every 5 days six months out of the year. 7 months if you make the playoffs.
I've always been surprised we don't hear more stories from former pitchers about their arms years down the line, I imagine there has to be some long term fatigue or pain. Unable to lift certain weight, pain when reaching, etc.
The pitch clock being a newer addition, I'd say we have to wait a couple seasons to see if the injuries continue to increase, level off, or possibly decrease. But something had to be done about the time between pitches, the constant milking time from pitchers really became a nuisance, so perhaps they need to find a happy medium that satisfies pitchers time between each pitch and game time.
I think what Gubie says has the most merit. Throwing as hard as you can from the first pitch of the game to the last, and the constant analytics on spin rate for off speed pitches has been too much of an evolution too fast.
I know one thing, if I played pro ball the last thing I'd want to be is a pitcher. My arm is just too valuable to me, and I can't imagine having to go through Tommy John surgery. What these guys do out there still blows my mind, it's nothing short of an enigma to me.