As pointed ut by
@dapaterson, the test exists to show people meet the minimum standard to serve. Nobody thinks that the person struggling to pass the FORCE test is "fit", just that they meet the minimum standard.
So, the real issue wasn't that they were unfit, it was that the person was a POS. Linking the two is just a way to rationalize your predisposition toward a particular look.
Those highschoolers are the future, so how do you propose to get them into better shape, apart from complaining about one fat Stoker was and how the rest of us who still serve don't always fit your image of a perfect CAF member?
If your solution is as bad as your solution to uniforms not fitting women, perhaps consider yourself lucky you aren't still in...