The Legendary Dragon Alephwyr, named Alephwyr, BA

If you don't believe in the liberty of others you don't believe in liberty.

I mean to be fair, many will just openly admit they don't believe in freedom, that they think it's a delusion or an incoherent or arbitrary concept that can mean anything.

Freedom is a folk concept that will end up being replaced by something more exacting that still has most if not all the same implications. Theories are inevitably replaced by new theories that better explain the same facts. Freedom is observed, there's some factual kernel there

That's insane.

I am open to an explanation

Freedom is not a theory. It's material and empirical reality. Many things in reality seek it's own self-actualization.

All observations are theory embedded. The nature of "freedom" is contingent on theories adopted, some better than others. It is my belief that whatever theory ultimately best describes "freedom" and its operations will probably partition it in a different, less intuitive way.

Not all the time. Theory can come from observation.