The claim is obviously made in a tongue-in-cheek fashion rather than in anger - but it's effective at pointing out the net result of not testing for a wide enough sample of your potential customers, resulting in some of them not getting the functionality that they paid for.

I would assume the title is facetious...

So you're defending the title by claiming that the title is linkbait?

It's the same title as the YouTube video.

That's right; the title is linkbait

You are a great person.