I think there's two things here, first you get the children who use their imagination differently - instead of devising long narrative tales with dolls or figures, or building lego, they'd rather spend hours on craft sets and art. No big deal, it's still playing, but it's the child version of the difference between storytelling, theatre, sculpture or painting.
Then you get the children who are on screens all day and who never really learn how to play properly in the first place, and I'm sorry, I know MN likes to cool wife about children on tablets, but bloody hell. I work with children, I have a toddler and a teen, and the amount of kids I'm seeing who are just glued to a tablet to the exclusion of all else is pretty awful. When my eldest was small it was hard enough to balance TV time, but in my experience, most kids will get bored of the TV eventually and want to do something else, but with tablets it's like they have no off switch.
I met the mother of a 7/8 year old at a party back at Christmas. She said she had gotten rid of all- and I mean all - of her daughter's toys around age 5, as all she was interested in was her tablet. The child had then asked for a more "grown up" type doll for Christmas, design a friend or something, plus accessories. The mother said she had no intention of getting it and cluttering up her nice clean house again, the child was bought a Switch instead