could the new 720p 720hz oled reasonably have been 720p 1080hz?

[kyube]

Discorz (or... Someone) on reddit was the one who distinguished motion clarity (track) and motion performance (fixed gaze).

I completely disagree with that disambiguition.
Discorz likely does too.
Don't rely on Reddit too much, it's rare to find good information there...

At the end of the day with strobing you are limited by the base fps.

“Limited” in what sense?
“Limited” in the sense of eliminating the stroboscopic effect? Yes, but this is an issue with current sample & hold technologies as well.
“Limited” in terms of eye-tracked motion clarity? This is purely dependant on what pulse width the strobing implementation targets.

The frame rate, when discussing these topics, is usually assumed to be above or equal to the refresh rate.
When the frame rate is below the refresh rate while strobing, you'll experience duplicate image artifacts caused by signal (time-domain) mismatch.
Yes, this occurred on CRT's as well. It's a artifact for any impulse-based solution.

At the time they felt there was a lot of posts about taking photos tracking ufos/frogs. Non important stuff.

The TestUFO pursuit photographs users post online are a way to measure eye-tracked motion clarity target.
It's quite important in evaluating dynamic content handling on a display.