The meat of the complaint is that YouTube Kids is a bit of a wasteland regards regulating what's being put in front of children. For instance, adverts for the show My Little Pony stand side-by-side clips from the same show, but when you click through the clips, you're actually presented with commercials. Then, there's the issue that companies like McDonalds have channels on the service that produces promotional videos styled as news reports.
The group also wants Google to pull all unboxing videos from the app, describing an example clip as "in effect, a seven minute commercial." The charge leveled at the company is that there's no guarantee that the clips are fan created, and that they act a lot more like toy advertising than, say, entertainment content. It seems like a near impossible task for Google to deal with, however, since almost all of the site's content is user-submitted.
It'd be easy to dismiss these concerns as the bellyaching of overprotective parents, but the list of signatories includes heavyweights like the Center for Digital Democracy and Consumer Watchdog. Medical practitioner groups are also signing the document, including the American Academy of Child and Adolescent Psychiatry. Studies have shown that young children lack the cognitive ability to resist advertising, making them overly susceptible to craving the latest toy. For its part, YouTube told the Mercury that it "consulted with numerous partners, child advocacy and privacy groups," and would always accept feedback on how to improve the app. Whatever happens, this one is likely to run and run.