Earlier quoted context omitted.
In my non-scientific experience native speakers are more likely to make homophone errors.
That may very well reflect reality, but you also point out that it might not. Would it be better, therefore, not to post the claim in the first place? (I'm not trying to accuse you of doing something wrong. This is just a minimal, relatively harmless example of a larger and more concerning phenomenon in this age of information spreading so quickly with so little verification. I suspect we're going to need to take a s…
(Personally, I see nothing wrong with posting anecdotal evidence as long as it's clearly identified as such.)