If we consider a frame rate of 60 FPS then a 5 year old would have seen about ~ 6.3 billion images [60 (frames) * 60 (seconds) * 60 (minutes) * 16 (waking hours) * 365 (days) * 5 (years)]. Even with 30 FPS you can halve the number and it's still a huge number.

A cool fact is that this model fit ~5B images in 900M parameter model which is tiny compared to the size of the data.