PT (and other healthy habits) is the number one thing you can do to up your survival. It ups your survival even if you never have to fight or ruck fast and far to get out of a situation. The first weeks of an "unplanned war" involving American non profesional soldiers would be be a brutal Darwinian process, and the fatties will be the first to go.
That being said I think some of those goals are like WOW, you would be at the top end of the curve in an airborn unit. I'm glad to see he mentions personal goals at the end. Physical fitness is a very personal thing and you should set realistic goals for yourself depending on your age, current fitness level and available time. PT is the cheapest prep to work on but probably the most ignored, because, at a fundamental level our society is hedonistic and lacks self discipline. Probably another symptom of why we're in the fix we're in anyway.
And, I don't think saying I'm "gonna go exercise" makes any implication of my sexual preference.