I agree with you. One thing that i've been getting frustrated about with those on this site is how negative we've become without seeing any positives. The main reason being, if this guy finds out about treebuzz or is told to check it out, and he see's people being completely negative he's going to run for the hills and we can't help him improve at all then.
Once on a job another tree company pulled up and chatted with us, he said he wanted to start learning to do things safer and asked where he could learn. One place i directed him was this site, but if i'm him and i do work like the guy in that video, i'm never going to ask a question for fear of the response. We have an opportunity to help others through this site but they have to stick around to hear. As much as i'm about bettering myself, how much more rewarding is it if i can better others?
I'm straying off topic a little. When i watch these video's of people doing things carelessly or not up to our standards, i try to take something away from them. What not to do and somethings that i could do better. I could def start communicating more, that will leave no doubt that everyone is on the same page. His positioning was good, worth noting and remember. Then, like you said, see what we can improve on what he did. Remember how important it is to have a sharp saw. It reminds me how much i love my PPE. See how i would have done things differently (set my climbing line in a way that if need be i can have a quick descent).
You can learn from everyone, there is always something positive we can take away. Even if everything was done wrong, now i learned how not to do it.