[tome]

As I understand it (and maybe I'm wrong) his objection was that the law would compel his speech (in particular to call a transwoman a woman). Is that claim false? Is there any existing similar compelled speech under the existing legislation? If not then that seems to explain why he hadn't previously criticized the legislation.

[joshuamorton]

It would compel that speech in the same way that you are compelled to call me "Joshua" and not "asshole" when we are engaging in a conversation at work.