I'm not talking about the 1st amendment. I'm talking about the rhetoric of those on the right in America. They are constantly congratulating themselves on being the champions of freedom. But if someone wants to read a book they don't like, or if someone wants to use a pronoun they disagree with, or if someone wants access to certain medical procedures then they pass laws to restrict those freedoms. It's incredibly hypocritical.

Private companies != federal government. See https://en.wikipedia.org/wiki/Strict_scrutiny, there's no way the federal government will be able to argue that it has a legitimate interest in banning pronouns in signatures.

"Personal liberty" is a superset of what's protected by the First Amendment. No one said anything about 1A. It's clear that MAGA is not actually interested in either 1A protection specifically (totally aside from this case specifically) nor personal liberties generally (as exemplified by this case).

in twenty years of working for universities, federal agencies, state agencies, startups, and enterprises, I have never had a mandated signature style.

From the linked article...

internal memos obtained by ABC News that cited two executive orders signed by President Donald Trump on his first day in office seeking to curb diversity and equity programs in the federal government

This isn't about standardizing email signatures.