If ever a privacy is passed restricting age to something higher than 13 ( COPPA ) would all youtubers be forced to age restrict videos (not made for kids ) even if they feature content suited to children or not m ? Why ? This is to prevent data collection front from children above 13 . Example : There is an youtuber in India corporation . Say India makes a data protection law banning data collection of children below some age x between 13 and 18 . Would all Indian youtubers in general assuming no special provisions in that law be forced to age restrict even children videos for some age between 13 and x like videos targeted for high school ? This is to block them out and thus prevent data collection through comments or personalized ads .
Whatever the hypothetical new law is, the lowest-hanging fruit is Youtube, where India could take action against Youtube. The Federal Trade Commission did so w.r.t. COPPA violations in the US, and Youtube settled. Since Youtube is a US company and the FTC is a US federal agency, had this gone to court and had the FTC prevailed, the courts would have ordered Youtube to do something, and YT could not just say "nuts to you". Indian courts might enter a similar judgment against YT, and in principle it could be enforced by blocking YT in India, which is not a trivial thing.
The other prong of legal attack would be against the channel owner. In the case of COPPA, the channel owner is also liable – for the Indian case, it would depends on what the act says. So the FTC can take action against a channel owner, although enforcement would be challenging in certain countries, but pursuant to the court order, YT could land in legal hot water if it tolerates violations by channel owners. The same would hold for the Indian hypothetical. The government of India may have no direct leverage against a violator, but it does have some leverage against YT, which has complete leverage against the channel owner.
One would have to look at the wording of the relevant act, to determine what leverage exists, for who, in India.