a) individual women may still be stronger than individual men
b) in a lot of the jobs mentioned by the OP (who no longer appears to be with us) greater strength can be offset by persistence and technique. As mentioned above, I used to work in a pickaxe-swinging, wheelbarrow-pushing job and I am not only a moderately sized women but have a genetic condition that affects the strength of my arm and hand joints. I found I could keep up with the men around me by thinking strategically and using the stronger parts of my body to compensate. I could just as well have done that as a roadworker or fisherman or most of the other jobs she mentioned, though I personally would not have been fit enough for the Army. But then neither would dh.
c) I seriously doubt whether most of the jobs the OP mentioned require more physical input than the caring jobs traditionally done by women. Lifting a 16 stone uncooperative man is harder work than pushing a barrow full of rubble. Actually, lifting a 10 stone teenager is harder work than pushing a barrow full of rubble. I know because I happen to have done both.