Good article, I have wondered before with the advances in sports science and training, with pretty much every sport seeing competitors going further, stronger, faster, how bowlers haven’t evolved the same.
We see it in the field with every team much fitter and up to a very good standard compared to 20 years ago, and batsmen are hitting the ball further than ever before, though part of this is of course down to the actual bats.
Perhaps it’s down the amount of cricket played now. Fast bowling no doubt takes it toll on the body, and there isn’t a great deal of time of for those top players who play all 3 formats internationally, on top of competitions like the IPL and Big Bash.