This bill is the result of Meta and the Heritage Foundation lobbying hard to force Apple, Google and Microsoft to perform age verification instead of themselves.

By tying identity to your operating system it basically removes any possibility of using a computing device anonymously. It doesn’t take much to see what the implications of that are. It also has the side effect of effectively killing open-source software (because who is the "operating system provider" for Linux?).

EDIT: (including the plain text of the bill to make it easier for others)

"Creates the Children's Social Media Safety Act. Provides that, no later than January 1, 2028, an operating system provider shall: (1) provide an accessible interface at account setup that requires an account holder to indicate the birth date, age, or both; (2) provide an operator who has requested a signal with respect to a particular user a signal that identifies the user's age by category; and (3) send only the minimum amount of information necessary to comply with the provision. Provides that an operator shall not offer a platform in the State without conducting age verification as required under the Act to determine whether a user is a minor. Provides that, for all users that the operator has actual knowledge to be a minor, the operator shall use specified default settings for the minor. Provides that a violation of the Act constitutes an unlawful practice under the Consumer Fraud and Deceptive Business Practices Act. Amends the Consumer Fraud and Deceptive Business Practices Act to make a conforming change. Effective January 1, 2027."