I was able to observe this development in real time, so to speak: Between 2005 and 2015 as my toddlers grew older I always took them to the huge “tractor playground” (named after a real, decommissioned tractor that was buried in the ground and invites kids to climb on it) - which was a mix of “toddler and older children’s areas”—the toddler area was fenced off a few years ago. For the usual official reasons. But in reality: 1. So parents can stare at their smartphones without running the risk of their kids running off. 2. So the dogs stay out. If I still had to take the kids there and then got upset about it, there’s no question what everyone would say: “I think it’s great!” Exactly. Finally, we’re locked in at the playground too - that’s what they’ve been missing...