I’d argue that a native speaker who had been raised in Japan wouldn’t have found any fault in what I originally said. I’d also say that native speakers aren’t necessarily any more aware of writing formats than people who’ve acquired the language (though I admit they likely are), or of the nuance of English which would contribute to the linguistic comparison.

The third, and most relevant, point I’ll raise is that, by and large, the majority of people who’ve made comments like this to me in the past were not at all native speakers.