Everyone should know about Accessibility because it's where "reduce pointless animations" and "bring contrast back" are too :)

As for this feature, I found out about it and turned it on, but I don't think it helped me much with reading off the screen while in a car.

It's interesting how many kinds of motion sickness there are. I have no problem reading in trains, or sitting in a car and looking ahead or through the window. But I can't read in a car, even with these dots.

Don't know that I would say anyone. As I have never had any issue with any sort of motion sickness.