Wtf, it was always rumored to be mini-led, not micro?
I have followed this for 2 years for now and not a single rumour (for credible source) said that it was micro-led, wayyy too early and too expensive. And you are dreaming if you actually believed ipad was having micro-led this early.
Arguably, for device this small (Compared to 75" tv), is it really THAT noticeable when used mini- vs. micro-led. If it has thousands upon thousands of led's inside 12.9" screen, you will see some glow if you really look for it, but in normal use i argue that's the differences are minimal.
For example if you take a cursor on black background and swipe it across the screen, some glow is always present in current screens that have low number of dimming-zones. In Mini- and Microled this glow is reduced a lot. (OLED doesn't have this for obvious reasons, ghosting tho is a different subject)