Those are powerlifting exercises. In fact, that's the exact order of events in most powerlifting competitions.

I competed in powerlifting in my 20s; my life revolved around squat/bench/deadlift. I enjoyed it, but yeah, he's right: training like that is very specific, like anything else, I suppose. I could squat, bench and deadlift a ton, but literally anyone could beat me walking up the stairs, or even arm-wrestling. The first time I tried CrossFit, it nearly killed me. And yeah, powerlifting tore my body to shit. Back then, the only time I wasn't in pain, was when I was lifting.