Not even close.
The point was that two machines with similar size engines were run in about the same RPM range, and the HST machine didn't have to be run at 2000 RPM+ to work properly. The contradicts your comment that HST machines need to run at 2000+ regularly.
Small HST tractors with HST might have to be run at high RPM to do much work, but small non-HST tractors are also going to have to run at high RPM to get much done.
You compared large and very large non-HST machines to a very small HST machine....completely different animals, making for a poor comparison that means almost nothing.
You also misread what I wrote about the linked pedal machines. HST linked machines SAVE fuel, not waste it. Why? Because people with non-linked pedals set the RPM, often higher than necessary, and leave it there constantly. Linked HST systems match the throttle to the load so when you're going 2mph it's not running 2000rpm+ because it doesn't need to.
HST tractors work just fine at engine speeds lower than 2000rpm, regardless of whether people use them that way or not.
I copied nothing from your post. My Massey rarely goes over 2000rpm....usually only if I'm on the road, or for a few seconds here and there if I'm pulling something heavy in a low gear. MY LS also rarely went over 2000rpm...usually only if I went on the road or I was trying to max out the loader with something really heavy. Sure, there were times when I had 50T of gravel to spread and I wanted to get done quicker, so I set the RPM near PTO speed and got faster cycle times, and faster ground speed, but that was a choice, not a necessity.