remember how Microsoft was entering this gen with a focus on pushing Kinect and streaming crap and being an all-in-one box of some kind which let Sony get the hardware leg up because they went simpler as part of getting their shit together after last gen and then at the last minute MS upped the clocks to try and close the gap
now this reads like the Pro was designed really to push PSVR, MS heard "PS4K" and went "oh shit" and wound up with the S (to get 4K support out early...and sounds like an absurdly well designed piece of hardware) and Scorpio (which is going to be overkill, especially with these things all supposed to be running the same software semi-compatibility)