It's weak - but could easily be modified to a strong parental rights type law - companies have to verify in person parental approval for little kids to have social media, parent is then admin on account, and time limits must be settable by the parents for online account activity. And no vanishing text (snapchat etc).

The effect would likely be the same, but rules to protect kids have stood up pretty well.

Political theatre? Courts will most likely strike it down for violating the First Amendment.

It would basically be like under 18 no porn allowed. So.... not really.