Parents just want to be able to designate a device as belonging to a child---one setting---and have that respected. Not to have to dig into the settings of every account, service, app, and website and figure out how to set it in age-restricted mode (if that's even possible).
The tech companies have made this way too difficult and now they are facing the consequences of their shameful neglect by having to deal with all these new laws (which they will probably ignore, with no consequences, but we'll see).