I am with you.
I think advertisers —and the people implementing their work— are a net bad, at all ages. They are actively and openly trying to force influence on people to get them to spend money. Why would you want that for yourself, let alone your kids?
"But they'll never learn!" - the hell they wont. You don't need to cut your leg off to know it'll hurt. Talking about this stuff, as you have, is the perfect way to expose them to what's actually going on. The unfettered "Let them learn their own way" nonsense doesn't do it justice.
"My kids are fine!" is an anecdote, not an argument. How about one of the dozens of reviews of the impacts of junk food advertising on diet, spurring record rates of childhood obesity? https://www.apa.org/topics/kids-media/food.aspx
I don't get it. Your right to hold your own opinion is an important thing. Letting people (and now AI) openly influence you is a stupid decision. Letting them do the same to your children is much worse.
And what I originally came here to say was that I applaud you getting your kids on real computers. The education system —in general— has given up on educating computing because "kids know how to use everything". 20 years ago, we were taught how to use office productivity apps (eg MS Office), mostly worked into other lessons as part of the (eg) data collection (eg Bio, Geography).
Ask today's school leavers to make you a pivot table.
Edit: The only place I might deviate from you is internet access. I've got a few years before self-learning is a thing for my children, but when they're ready, I'll be more than happy to give them access to Wikipedia and other sanitised (read: ad free, "people aren't the product") learning resources.