How do you know there's no PWM flicker? Even my M3 Pro with its supposed 10khz backlight burns my eyes, I had to get rid of it. Is this display not oled?

MacBook Air has an IPS display with no flickering, see https://www.notebookcheck.net/Apple-MacBook-Air-15-M4-review...

Recent Pros have miniLED with high freq PWM.