No, but I didn't say he can't say his sentence because Klingon pronouns can't be used without an antecedent. Indeed, I didn't say he can't say that sentence. He was pushing the boundary of what was acceptable, because he claimed his proposed pronoun 'oH was referring to an antecedent ngoDvam that wasn't present in the sentence, but what he was doing was functionally equivalent to using 'e' as a subject, which definitely isn't allowed.

If you have to say it this way, just state ngoDvam outright and you'll have a much stronger sentence.