I phrased it that way because I’m also unsure as to how “ex-convict” should be used and how most people use it. I’ve heard other people say it to mean anyone who has been released from prison, although that doesn’t make much sense for someone who just serves their time.

As a result, so far as I’m aware, it’s colloquially ambiguous, and lawyers and jurists may have a more stringent definition they might use.