Oh yes, good old marketing.
Along with buying off "Industry Awards" – hey, we're objectively the "Best cybersecurity company of 2022!" With a matching "platinum/gold badge" to go on our website! Or buying a place in the "10 Best Products for X" and "Independent X-vs-Y Comparison", another classic.
Because it works. Are your customers not sophisticated? Are they unable (or unwilling) to follow up on defects and outright lies? Or reality simply doesn't matter all that much to them? Humans LOVE a good story more than reality, after all.
Then your contribution as an engineer to your company's success, and hence its longevity and your job security, is strictly inferior to that of marketing. Not everything is the work of evil marketers – a lot of the supplied BS is in response to an existing demand for BS.