Theft is not protected speech.
What if his speech is a manifest lie?
Then it should be disproved academically and his reputation suffers accordingly. Otherwise it's just opinion, and opinion is protected speech.
What if he has lied about who he is on his job application and about other things.
That's a question for the university to decide on.
well, the whole thing is a matter for the university to decide upon, so your opinion and mine are irrelevant.
Have you ever had a job or do you just show up to make sanctimonius speeches or forums?
The government may not put him in jail for his speech. But everyone who ever had a job knows that if you say or do certain things that draw attention to your employer to his detriment, your are history.
And do tell,do yousupport the restrictions on free speech visited on students in the name of not having "hate speech". This speech was classical hate speech. And are you aware he took a loyalty oath to get his job, I think his speech makes it clear he has violated that oath. And if what he published is a lie, a fraud, then he ought to be fired for that.