Yes but star, you think there is some weird bifurcation of training intensities where there is only high intensity or only low intensity where there is quite a large spectrum. Doing 20x100m @ 75% with 1000 reps of abs after is much higher intensity than a day off. Likewise, 10x10m from blocks with 3x6 squats after is much different from 4x30m blocks, 4x60m blocks, 4x8 hurdle hops, 10x2 powercleans, 2x6 squats, 3x8 lunges, and finishing off with 20 medball throws.
The fact that people do some upper lifting on a day with tempo does not make the day a “high intensity” day necessarily or even comparable to a sprint session. It may be higher intensity than a day off, but it is much lower than a sprint with lower body weights day. And in the examples provided, where there is a DAY OFF, after the tempo+upper weights, it becomes a wash entirely. I don’t understand how you can’t get that.