First off all, I don't want to come of as rude here. I didn't dislike the video, I don't think it deserves a dislike, but since you are mentioning the topic and I canceled the video halfway through on my first click, my *guess* is you *might* be interested in why I did so. Not that you should be and not that it matters (its like, still a pretty good liked video from the current like/dislike ratio and I would not consider it bad in any way shape or form).
When I watched the video it just didn't seem to have a high information density. When I was about 9 minutes in, I had the feeling the only thing that I had learned so far was that you had someone machine a custom piece of aluminium for you which you designed to fit on top of your board. That is pretty neat, but it's not a 9 minute topic of conversation. There was no mention of how many W/K this heatsink is going to dissipate, nor how many it needed to. Nothing was said about the design process of the heatsink since David 2 did it. You mention you did an earlier video about heatsinks where you *do* go into the specifics of such stuff. So at this point the video felt just like you were going to show a piece of aluminium into the camera for 24 minutes.
Now please, for the love of god, don't get me wrong. I do not mind that at all, but *maybe* others did and disliked because of that. Thats all I'm saying. Me personally, I could listen to you rambling on for hours (and sometimes I do) just because I think you have a nice voice and the topics are relatable for me.
I really hope this post doesn't come off as rude. English is not my first language and I feel I might not have done a good enough job of expressing myself here.