There's an even bigger danger, as if the harm it will do to LGBTQ kids isn't enough. And it's why tech companies are pushing for the bill.
Mandatory positive identification. In order to ID 16 and above/below users, everyone must be positively identified. Meaning anonymous access to the Internet in the USA will disappear. It's been the holy grail of data companies for at least 20 years.
Also, imagine what a fascist US government would do with such info.