I went back and forth, but I am of the mindset that if I ban it they will either do I behind my back or rebel later in life. So I settled with 15 min of wherever they chose (other than social media, sorry nostr). They can watch age appropriate shows, play games, etc. They have unlimited time to play scratch for coding, talk/text with grandparents, and read books, though my older one is limited to a kindle for that to avoid the led screens. It took about 2 months for them to get used to the 15 min limit but now they have no complaints, play with their toys and play outside more, and many days don’t even pick up their tablets by their own choosing.