The speed you replied, I think you might have missed the second paragraph I edited in (a habit I have of posting the comment, rereading it outside the edit box, then adding clarification). The edit should make it clear I'm not talking about native fluency.
I don't think your second paragraph ("So native speakers ...") changes the meaning. And, FWIW, i also disagree - i think that a native speaker is someone who grew up speaking that language with everyone around them.
