She's not wrong
Kids would be much better off interacting with each other, doing stuff outdoors and developing dexterity by making stuff[*] than sitting in front of a BoobTube,web browser or smartphone.
[*] and I DON'T mean assembling the pathetic snap-together so-called 'kitsets' sold by Toys R Us and similar purveyors of dumbed-down junk. They should be using real, sharp tools to shape parts and nails, screws and glues to assemble them. Or riding bikes/building trolleys and learning not to fall off them. After all, if you're older than 40 that's what you used to do, so why on earth would you want to deprive present day kids of the fun of gaining those hands-on skills? Don't give them a kite: show them how to make their own so they can feel the thrill of having something they made fly and fly well.