Your argument from rebbe yochanan and reish lakish is misplaced; reish lakish was a talmid chaver who argued, and was permitted to because he was on that level.
The average talmid of rebbe yochanan was not qualified to argue on him, and we don’t record such opinions, though I’m sure there were many. They don’t count. If Rav moshe is very shtark about something and denies the authenticity of an idea, then only people in his league are relevant to mention.
You’re comparing apples and oranges.