That is fair. I wasn't aware of the kerfuffle around whether Southwest was using 3.1 or not. I took the source and linked source at face value. It would have been nice to have had someone do more than "nope" and instead link to a reputable source. This is how you counter disinformation.
> For everyone flabbergasted by Southwest running ~Windows 3.1~ old software
You said it; own it. You could have said "For everyone who was tricked by the joke that Southwest runs ~Windows 3.1~ old software" but didn't.