I'm a father of two young kids nowadays, and I also was a teenager in the 90s with internet access when my parents didn't really know what it is.

I think her statement should read "no unrestricted/unlimited smartphone access for children", but I think for a child time limited, guided smartphone access is important - just by letting her use my phone now and then I don't think I'd be able to have her build up the media competency required for not wasting her pocket money on nonsensical predatory games when she's a teenager.

She's 7 now - she generally can chat with a limited amount of people (family members and some friends), make pictures, and request app installation. I'm approving pretty much every free app nowadays - at the beginning I was curating, but we went over game mechanics several times, so she's now recognizing predatory or low effort games herself, and gets rid of them after trying them out. I have my doubts educating a teenager with significantly more technical skills, disagreeing with everything you say, and some ability to throw money at the problem will be as open as her to slowly learning those kind of pitfalls.