My son was reading / doing arithmetic by the time he turned three and we did it screenless. All I ever did was point to everything I was reading while I was reading it.
And for whatever it's worth as a parent of a kid way above his grade level doing math and reading I highly suspect that it's not that important ultimately. I just feel like teaching them stuff is more fun for me personally than listening to them watch paw patrol.
Rough and tumble play is also thought to have some importance in child development, and it isn't limited to humans.
https://onlinelibrary.wiley.com/doi/abs/10.1002/imhj.21676 https://www.sciencedirect.com/science/article/abs/pii/S01497...
Personally I think I would start with paper cards and then switch to a screen (Anki) after a couple years.