This video has been in the works for many months and knowing his work it is probably one of the most comprehensive works on aerospike engines outside of academia.
Anybody else interested in space stuff should also check out Scott Manley. I also like Marcus House also has some really great stuff.
These guys focus a lot on SpaceX but they also do a lot of other videos on general space stuff.
Marcus House: https://www.youtube.com/channel/UCBNHHEoiSF8pcLgqLKVugOw
Scott Manley: https://www.youtube.com/user/szyzyg
Agreed, Everyday Astronaut and Scott Manley are my go to for space and rocket news and videos.
As someone who does have some training in it, I can say that "best space content on YouTube" is akin to "best brain surgeon in a room full of circus clowns."
He gets a lot of stuff right, don't get me wrong. But the appearance of credibility is down to enthusiasm, specialty of focus, and editing and delivery. It's fine as far as it goes, but it's infotainment. It's more important that you be entertained and feel smart than sit down and struggle with the actual application of engineering principles and achieve any kind of reliable knowledge.
(Scott Manley wins at all three, though.)
Taking an esoteric concept and making it understandable for the masses takes far more talent and dedication than you might think, and it's something that experts often fail at (or don't attempt). This guy makes no false claims about his credentials or the intended purpose of his videos, and your condescending gatekeeping shows a real lack of understanding for what this guy is actually doing and why it's so valuable.
Long ago, some cranky academic wrote on his very well-sourced and specialized website, back when there was still that sort of thing, something like, "Everybody said that the internet was going to let anybody say anything at all. It turns out they were right."
I'm fine with the backlash from what you call my "gatekeeping." (I imagine that some gates need to be kept, but I suppose that's another story.) My point is that "the best on YouTube" is not as grand a qualification as one might suspect, and is certainly not a guarantee of accuracy.
You could've compared this to a brain surgeon among medical students, or even software engineers, something technical/noncreative.
Would you care to give a few examples so that I can appreciate their significance? Are they major errors or are you nitpicking?
These two are perfectly legitimate ways of using the medium of video to avoid making mistakes.