Technically, the jury is still out on this. I don't think anyone's done any kind of study of how childhood YouTube brainrot affects their long term outlook during adulthood, simply because YouTube brainrot is too new. For what it's worth, if I had to bet money, I'd agree with you that "socialized, bonded, explored, etc." is better than YouTube, but I don't think this has been proven yet. It's just a gut feeling.
There are definitely many benefits to socialization outside, but let’s not forget the tradeoffs. Mental health can be repaired (I.e. ozempic for the mind?), permanent injuries - much less so.
(I picked an extreme example to prove a point, I’m not suggesting the risks of playing outside today are equivalent. But the risks are real nonetheless)
In Ukraine they are / will be for many years.