It sounds like he’s simplified part of the story, maybe exaggerated a little, and maybe changed some of the specific product names to ones that are more generally recognizable. But the core of the story is true.
This is no different than how any other energetic, extroverted, outgoing, optimistic sales / marketing executive I’ve worked with would behave (let alone - a founder trying to pitch a VC). They’re not necessarily being dishonest - not everyone has an engineer or a scientist’s analytical memory and linear, organized view of cause and effect. And it’s not as if we’re talking about presenting evidence from a clinical study for a cancer drug here - the man is just telling a story, everyone knows that.
Not sure this merits the tone of the headline or the start of the article, which certainly will give 90% of the people who just skim it the impression he made the whole thing up.