I completely missed this one. You're saying things that even Ben Askren would disagree with.
You're a wrestler, so you prefer those positions. Fair enough.
A BJJ Scout video breaking down the evolution of Askren's ground game, as adapted for MMA, isn't an indictment on one style/position, nor is it absolute proof that some certain position is, and should be accepted as, THE best.
Ben Askren learned that he had trouble with control from mount and back mount. He moved toward a more controlling game where he could compromise his opponents base. Ultimately, Askren breaks the base (far side wrist), and looks to kill the hips. Damage during the entire scenario, but potential for big damage once he really controls the hips.
You know what this proves? Askren is an exceptional grappler who was more effective implementing mma-focused adaptations to a game that would be centered on familiar positions, with familiar controls.
Another thing we learn is that Ben Askren doesn't have great functional jiu jitsu. Are we surprised he's better from the ride than he is from mount?
Side note... do you know how many wrestlers, some from top division 1 programs, took up jiu jitsu and absolutely cannot escape mount or back control without being submitted? This happens all the time, and there are countless examples. Hell, there are several examples in ADCC alone.
Some grapplers are better at certain positions than others. One man's back mount is as dangerous another man's xyz position. I feel pretty confident in that statement.