Fact is just like their parents, kids are tremendously connected these days, so there's a massive networking effect in the cohort. There's much less outdoor/social activities among kids than there were couple decades ago, simply because there's noone playing outside. Yes we can argue that no screen can replace human interaction fully but it does replace quite a bit of it.
We often hear this parents not doing their jobs sentiment over and over, either from people who have no kids or had them prior to smartphone era. Do you often find yourself spending a whole evening with a laptop or tablet? Checking facebook on your phone compulsively? Well same thing with kids. Sure I could just seize my son's devices, but then what? Push him out to the empty street? Try to be his playmate until he's 18? Because it's not just your kid, the whole social interaction fabric went the way of Great Barrier Reef.
Sure no technology can substitute parenting; most parents we know do the expected job of taking the kids for activities, courses, helping with homework etc. But you can't (and shouldn't) hover over your kids all the time. If this project can convert any of the social media/gaming time to at least something useful, it is priceless.
Also (meme-ing a bit here): why not both? :)
In reality, it's always a mistake to let the nonexistent perfect be the enemy of the good (or to be most pessimistic: the not-as-bad).
I personally am desperate for an app-ified version of this well-researched "direct instruction" book/process: https://www.amazon.com/Teach-Your-Child-Read-Lessons/dp/0671...