that's the point parent was making; Apple made a decision about such things when allowing an app within their ecosystem that makes such choices (Skype, in this case).
> In 2019, the Government of the State of New York sued YouTube for violating COPPA by illegally retaining information related to children under 13 years of age. YouTube responded by dividing its content strictly into "for kids" and "not for kids". This has met with extremely harsh criticism from the YouTube community, especially from gamers, with many alleging that the FTC of the United States intends to fine content creators $42,530 for "each mislabeled video", possibly putting all users at risk.[58][59][60] However, some have expressed skepticism over this, feeling that the fines may actually be in reference to civil penalties, possibly intended for the site's operators and/or warranted by more serious of COPPA violations or specific cases of "mislabeling videos."[61][62][63] As of July 2020, nobody has got the $42k fine.[64]
https://en.m.wikipedia.org/wiki/Children's_Online_Privacy_Pr...
It was bad, actually, because they had developed a system where your username on the system was tied to your in-game nickname as well so I ended up locked out of both and had to create a new username/nick.
The admin of the website literally said "there's nothing I can do". I'm sure this isn't to do with the law specifically but just some limitation of their tools.
At the gaming forum I helped to run around 10 years ago we consulted a lawyer and this [asking for birthdate but not allowing birthdate changes] was the only way to keep out of serious trouble and to not need ID verification.