My kids can simply ask the smart speaker.
edit: I can set up locked-down accounts with personalized speech recognition for them.
What does this parental control look like? The web site does not advertise it.
I suggest explaining your value proposition on your site, addressing all these questions. It's not selling itself.
That is good. Our goal to be competitive is to be cross-device and to try to give parents a level of control over information that they've not had before.