I think he just ran into a few bad apples. I have found that the Linux Community is full of very helpful and genuine individuals that care about their craft and helping others learn.
Yes some can be rather abrasive and short at times. That being said, if you ask well formed questions, research topics before you ask, and try to troubleshoot things yourself before you whine about someone that put hours of unpaid time into coding, then i have found you will almost always get a positive response.
I am not downing the guy in the video, I just think he may have got off on the wrong foot with some especially touchy individuals. My experience with the community has been quite the opposite from his.