Blunt constructive criticism =/= antagonism.
Being blunt also doesn't necessarily equate to useful criticism either. It's pretty clear by the comments on most of these videos here and on their youtube videos that most people don't know most of these techniques, and that, even with this level of explanation that not everyone immediately gets the execution of the purpose of the technique. So, obviously some people are getting quite a bit out of the amount presented.
Also, comparing several very circumstantial uses of a sub-technique as being the same as teaching every single way to wall-tech is a ridiculous amount of false equivalence. While the videos and techs have been short, each out of shield option has had very specific purposes to them. This Option Select may be more defensive, but it doesn't get a free grab like the last one, and grabs are deadly in this game.
You COULD sum all of this information up with a very quick video, but your audience would have a low retention rate, and the point of a tutorial video is to teach, not to show off how much you know. Just because one explanation clicks instantly for you, doesn't mean it'll click for every viewer. That's why a good educational video tries to engage as many different types of learners as possible through repetition, audio cues, visuals, and button inputs on screen.
So, yeah. I don't the criticism you guys offered is a whole lot more than oddly vitrolic nitpicking. If you really think your advice is worthwhile, you can bother to be nice about it instead of intentionally wording it aggressively. But hey. That's just some blunt criticism about your constructive criticism.