I think this is a very useful lecture. I have worked in software development for decades and have spent quite a bit of time working in testing and QA environments and would agree with all of the points made in this lecture.
My one criticism would be when Brice answers his own question, he uses the phrase “dummy”. I know this was only a demonstration of how to ask and answer questions on the forum, however, I think it should be pointed out that responding to questions, particularly in a “beginner” type course, with negative remarks against the person asking the question is harmful to open discussion in a forum.
I know this sounds quite thin-skinned or picky, but if you want an open discussion where any question (if phrased appropriately) can be asked and answered, it might be useful to try and keep negative remarks out of the discussions.