They didn't give details but it might come across as rude to assume they didn't know anything. The guide is introduced as a director of engineering, IIRC. One rational and charitable interpretation based on that is that they know way more than you do.

Also, even without that introduction, I got the opposite impression. The lady seemed very knowledgeable and had that melding of professionalism, persona and super-smarts that is common is very high performers, in my experience.

Sure, it didn't cater to your exact technical expectations of what the video should have, but such an expectation could be considered somewhat narrow, and it may be difficult to argue that therefore it is without merit. Your point about it seeming to miss the point of its intended audience is well-taken but may result from an a super narrow understanding of the audience segment you mention, which is likely more diverse than suspected. Also, the context suggests it was designed as a mix of PR, marketing, and technical sneak peak / curio, which it seemed to achieve well.

Your self-awareness of how this could be the result of sexism or racism is commendable but by surfacing your awareness of it, it comes across as less likely to be the cause, so I'm going to assume it's some other reason for now! hahaha! :)

Overall your comment could come across as somewhat strident and narrowly focused dismissal of something, and someone, with lots of value! Perhaps you just missed that for whatever reason? That's ok! :)