Unintended consequence here...so if the ACFT is revised to allow for different standards based on one's job, people will be joining for just about every other job than infantry or the more physically demanding ones.
I used to always say us mechs in the USAF don't need to be running 1.5 miles once a year in less than 14 minutes. We need to be pushing -60s a 1/4 mile in 30 seconds, humping a 40 lbs toolbox up a fully extended B5 stand, lift and stab a 140 lbs CSD&Generator, etc. Real world stuff that makes a difference.
But no, still using measuring tapes, pushups, etc. to define whether or not one can do their job.