Just spent some time with siblings kid there may be some underlying problem - but nothing my older kids aren't diagonsed with or on path way to - kids nowhere near any diagaonstic pathway but it's an endless excuse for behavior.
Kid doesn't like books so that's it - it repeated in their presence as an immutable fact. Given a screen to keep them quite every opportunity.
When that was my children with that attitude because reading was hard for them I spent years and limited money enticing them back to books.
I got told it was easier for me - I had three kids much less money was on my own a lot as DH had to work way and no-one would ever have the kids for us even in emergencies - whereas they get a lot of babysitting. Difference is I realised school wasn't going to crack it without home support so our kids got that.
Sibling grew up in same house I did with parents that read and house full of books but isn't taking that appraoch with theirs - it's endless screens - and my DC did have screen young than ideal often expressed on here but they also had books and walks and toys as well.