Arrogance is thinking you can judge a coach from your couch.
Of course I do, at least with the obvious ones (Pep is very good, Koeman is very bad) but Enrique just came from playing the best football of the euros and also reaching SF which is well enough, and he did so while making quite a few decisions that looked strange from the outside. It is tough to say that he is mediocre.
I think this quote is brilliant: he has much more information, and at least compared to most his knowledge is also superior. We can all have our opinions, but why should he consider them? It will only risk to obscure his own vision.