By your tone I get the impression that you're offended by my statements.

I can understand that if you read my comment as if I intended to be insulting.

I'd like to point out that: I did not intend it to be insulting to the authors, for 2 reasons:

1) Nobody knows everything; I'm responsible for works which I do not go into detail with. For example, my reports include: Render Architects, Gameplay Programmers, UI/UX Design and things I conventionally understood such as Backend Development/SRE. -- If I spoke on a rendering topic it would be high level, this does not mean I am bad at my job.

2) The way in which this was presented is either: Highly media trained (IE: DO NOT GIVE ANY SECRETS AND WE WILL NOT TELL YOU WHAT IS SECRET WE WILL ONLY EDIT IN POST), which is a situation I've been in before actually, or the person presenting is, like me, managing a team of specialists that she does not go deep technically with.

I want to be clear: I do not think less of any of the people who presented this, I do however think less of GitHub the organisation for presenting this marketing without very much substance.

The crux of my comment was precisely this, certainly not an attack on any individual.

I even tried to acknowledge my potential bias towards sexism, racism (and perhaps also the valley accent): however, on reflection, I genuinely believe that I would have scolded a caucasian male significantly worse for presenting in such a way. I definitely pulled punches based on ethnicity and gender; which is also a form of racism/sexism - just in this case it actually benefits the video and its presenters.

The reason I even consider that they do not know the subject matter in depth was that the conversation stemmed almost entirely on what the presenter was seeing, as if they were finding things they recognised. Like when a person who has built computers opens up a server and recognises RAM, or USB ports. (something I have seen often in my career when non-IT folks get curious when people are working on servers). The second reason is typically engineers love to explain reasons. The why of a thing is usually much more thrilling to discuss and that wasn't talked about at all. IE: why is it clever to have an external thunderbolt ethernet controller, why is it clever to have these machines housed in sleds instead of racking the whole device.

The kinesthetics of how they're just pointing at fans, power and sliding it in and out of the chassis just reminded me of how I was when I got my first server hardware and started playing with it. It lacks the familiarity I would expect.

I hope you understand my position, it's not intended to insult or offend, we all have value of course and I was just uncertain if Github had put her in front of the camera because she represents a high position and doesn't work with this daily; which in my opinion reflects poorly on github, not on her.