Seems like everyone is getting Tommy John these days. Are arms getting more overtaxed now or pitchers/doctors/managers/owners/whoever jumping to it faster for other reasons?
I feel like this gets asked every year, and there's no real clear answer.
Some pundits are saying the pitch clock is the reason, and while I hate the clock and still insist it was a solution in search of a problem because the umpires refused to enforce the rule that says batters have to keep one foot in the box at all times, I don't see any real correlation and in any event there's not enough data to form a significant sample that suggests the clock means pitchers are throwing harder because of the clock.
My working hypothesis is that there has been a significant uptick over the past decade or so in both disguising deliveries and a focus on spin rate, and since pitching is itself already an unnatural motion for the arm, working on spinning the ball that much more increases stress upon the ligaments that much more.