This is a great point. And while I agree, just thought I'd throw in something to ponder about: could it be argued that the same issues apply for child actors on tv? And if so, should children not be shown to the public on tv? To the latter I'd say of course not. Did the Olsen twins or Macaulay Culkin understand the terms of their contracts? No. Yet many people love Full House, Home Alone is a classic. We are okay with child actors because there are regulations in place to protect them. That is the difference. So maybe it's more fair to say that instead of family vlogging being illegal, family vloggers should have strict regulations to follow (examples: the children can only be filmed for a certain amount of time per week which would eradicate daily vlogging, they must be fully clothed, and comments should be approved before publicly viewable - yes, that means parents will need to filter them themselves, hire an assistant, or opt to keep comments off). Just some things to think about.
Should it have been illegal for Hilary Duff to be Lizzie McGuire, Miley Cyrus to be Hannah Montana, Miranda Cosgrove to be iCarly etc? Millions of viewers, similarly to kids on Youtube.