Are you injured if you can't misgender someone?
You may not see the harm in this particular instance, but establishing "we'll just force them to say it and punish them if they don't" as a tool in any government's toolbox is a very, very bad idea.
Forcing me to say things I don't want to say under threat of punishment violates first amendment. It's been litigated and so concluded.
The fact that it's the 1st amendment indicates that founding fathers thought that it is indeed the greatest injury us government can inflict on us citizens.
> students can be reported for merely expressing their opinions about controversial political and social issues of the day or even if they prefer not to express support for American political allies and wars they may not support
By that argument the greatest injury that they were addressing was a weak central government that couldn’t provide for the security and financing of the state. It’s literally called the first amendment because the Bill of Rights was an addendum to the constitution.