> at first boot up as a parent should be your job to setup a child account.

Something I would be 100% OK with is some regulation that at first boot, you have to present information about what parental controls are available on the device and ask if you'd like them enabled.

I haven't set up a phone in a hot minute, I only do it once every few years, is this something they already do?

I'd imagine there's a lot of cases where a parent buys a new phone and hands down the old one to their kid without enabling safety features. I don't know if there's a good way to help with that - maybe something like, whenever you go to set a new password, prompt "hey is this for a kid?" and go through the safety features again?

Just spitballing, that last one may not be a good idea, not really sure.