Personally, I worry about the mental models formed at an early age, and how distorting technology can be relative to the real world. It layers abstraction on top of abstraction on top of abstraction at a time when kids are trying to make sense of reality for the first time and establishing internal models that will stay with them into adulthood.
Sure, some carefully curated content may be fine, but I think there’s a deeper question to be asked about the impact of current technology on young brains. Adults certainly haven’t adjusted very well. The truth is, we don’t really know how harmful it is. Maybe we’ll survive the next 100 years to find out.
Everybody drinks alcohol. Should I help my toddler tryout alcohol to prepare to the future dinners, parties and weddings?
I didn’t want to drink before high school gatherings where there was peer pressure and I stopped shortly after that.
I see so many first-world westerners cringe at the idea of letting your child have freedom and make mistakes on their own. Tracking, parental controls everywhere, neighbors snitching when your child is out and about exploring the world, etc, etc.
Not that it means 2 year olds should run around the internet with unfettered access, but just that the aforementioned logic is not sound.
There is also benefit to being culturally in sync (not necessarily 1 to 1, but somewhat) with one’s peer group. It can be alienating to be the odd one out.
If it were up to my grandparents, I never would have watched a tv show or movie growing up, or read fiction novels. But while that may have had some benefits, it obviously would have some costs with me being unable to participate in some of my peers’ activities and conversations.
Same with many other things: condoms, keys to a car, access to alcohol. There is a time for everything, and at the age of 4, a young human probably has not yet maxxed out on analog stimuli opportunities.
I learned YouTube when it came out in 2006 and I was 21. I've got 19 years of YouTube experience and I'm doing fine. A 21-year old logging into YouTube for the first time in 2025 will probably be doing even better within days. (hours ? minutes ?)
I don't see any reason that a child needs "the internet" (for a value of "the internet" meaning "mass-market apps") to prepare for the future.
Maybe you'd want to give them "Scratch Jr"[0] at some point to give them a head start ; maybe that would make much more sense. But YouTube??
While there are many formative opportunities about handling physical money (The sensation of exchanging physical coins is big on a kids mind or knowing they have money and having missplaced it), I can 100% see a case for a card instead, trackable, instant access to emergency money, etc