There is no question that arm injuries are at an exponential increase compared to 20-30 years ago. I get it in that what surgeons do is: they perform surgery. This is how they get paid. However, I happen to know a former DIv 1 coach who was in charge for 17 years at a prominent South East school ending in the 90's. Guess how many arm blow outs he had???? Zero. Zero in 17 years. Had numerous Big League pitchers from his school.
My own experience was similar. Pitched Div . Graduated in 88'. Zero arm injuries on our entire staff that I can recall in those 4 years. Zero. Pitched in Pro Ball thru mid 90's. I can certainly recall some guys with arm trouble who were shut down but nowhere near what we see today. I'm sorry but its just not close. Guys are throwing, on average, with way higher velocity now & as a result the spike in traumatic arm injury.