[GuardianCaveman]

I think low income family parents have to work more, sometimes multiple jobs to pay the bills so the kids end up with more screen time because maybe they have someone else watching them or they're alone depending on the age. If someone else is watching them it's easy to just give the kid a screen and they're not as concerned as the parents about the long term effects.

Also if you're a kid in a low income area where maybe it's not safe to go play outside or you need constant supervision to be safe you don't go out much and therefore screens become the default indoor play. My kids have a big backyard they can go out and ride bikes around and swingset and spaces to dig and play and get dirty in the backyard because I make enough to buy a house like that.