There's been some pretty clear information from countries enacting online ID laws that they want it precisely so that they can control discourse, not for any kind of protection. This isn't a hypothetical, it's the actual stated goals.

https://bsky.app/profile/tupped.bsky.social/post/3lwgcmswmy2...

> The U.K. Online Safety Act was (avowedly, as revealed in a recent High Court case) “not primarily aimed at protecting children” but at regulating “services that have a significant influence over public discourse.”