Indeed. And the prime culprit, at least what I believe, flicker, is back with the PWM control of LED:s. We had a while with cold cathode fluorescent tubes as backlights, which had less flicker, but now with LED:s, it's back at 100% modulation, except in a few monitors which control the current instead. I don't know what technology these goggles use (LED backlit LCD, OLED, etc.), but it's pretty likely that they too flicker.

I remember my parents saying that every night. Considering that the CRT TV was blasting electrons at us....I bet it caused some harm