You can’t protect some arms. There are gonna be guys who just don’t have the capability to stay healthy no matter what you do. And there are gonna be guys like Ryan, Clemens, Maddux, Glavine, Johnson who are naturally gifted and be able to throw 30+ starts for 20 years. They are rare though.
It’s still irresponsible to just go out there and say “ah **** it they’ll either make it or they won’t!” and assume that’s how it works. It doesn’t. You got to do what you can to protect dudes, especially when you live in the high velocity era like we do now