BTW

Academic freedom of speech applies to one's opinions, generally within their field of expertise. It doesn't apply to facts. The 2020 Presidential elections were conducted fairly and their results were upheld by courts according to the relevant US laws. Such are the facts. Mr. Illarionov got fired because he intentionally misrepresented facts about the elections, which is incompatible with intellectual honesty expected from academics (even from libertarians!) when they exercise their freedom of speech.