I think that any opinion that is shared publicly via interviews, may convey information about the personality of the person. I prefer when people express themselves clearly, even if it makes me dislike them. First of all because I know it is merely my subjective opinion. Secondly it saves time to know what exactly someone thinks, without covering it up, in order to be politically correct, or liked by the masses.
And it is not really important, because it is just a person you don't know, (even if you think you do) that you will probably never meet (even if you have seen him play live) and most importantly never have to work with.
For example, I always read with extra interest, old Lou Reed interviews. He is a genuine Lou, where you expect all sorts of sharp opinions closing to abuse, (I am not talking about abusing the journalists) and when you accept this, they are actually quite funny and to the point. He does not beat around the bush trying not to hurt feelings. And I am sure he was doing his show piece as well, I mean project the image of the outcast rebel genius, which perhaps he was.
But this is a whole different thing from the human interactions within a working relation. I know it, as everybody who has ever worked in his life. There is no excuse there to be arrogant or disrespectful or hurtful.
We should make this distinction and never mix up the two.