I'm really thought it was further away than that for any sort of gaming or real computer use, but I have no gauge from growing up in a house without anything but a tv till I was almost in middle school.
My kids had only a casual interest in games until age 6 when the older one discovered minecraft.
Thankfully Lego remains.
Kept my kid busy, she loved being creative, and it's way better than watching some video.
After an hour she looked at me, looked at her hand, and said "ow". I got her a smaller mouse ;-).
I am someone without children, so my point is much less valuable then the others already below. https://www.theguardian.com/technology/2015/may/23/screen-ti...
https://www.businessinsider.com/screen-time-limits-bill-gate...
Now the house sounds like a perpetual LAN party.