Earlier quoted context omitted.
I mean, if you video of Osama bin Laden telling me the story, or one of his associates were on the record with it, I'd find it plausible. In this case we have absolutely nothing. This is rather elementary stuff. If you accept your "more expansive" version of the truth then I have to entertain pretty much any fantastical claim because it is impossible to disprove anything definitively.
Doesn’t mean you have to accept it, it just means that there’s very little you can assert as false. Snopes does that every day with very little to prove it other than the desires of its readers to agree with them.
If I wrote "brightball beats his wife" and then said you couldn't really say it was false because you couldn't prove it had never happened definitively it would be outrageous, right? Nobody would accept that as a reasonable argument.