Actually GR is airing a view reflecting a common problem in the industry, namely FO's and CC are over-familiar and under-respectful of captains. This can undermine their role when things get critical, which can happen very quickly in aviation. Captain is the boss, and this needs to be recognized.
Incidentally, I am an SFO and know that there are a few captains with bad attitudes. This particular gent does not strike me as one wrt what he has written. Some of you are exemplifying what he writes with your silly responses.