Geno is not all that hard to get. He is aggressive on and off the court. As he has said, most teams lose before they even step on the court with UConn. His remarks, whether natural or contrived, factual or opinion, are factors in creating the advantage.
There is nothing "wrong" with it, but most coaches don't do it - I have noticed that most coaches who do "say things" are successful, but I don't think it is a requirement for success. As Farm Fan and others say, it doesn't endear him to the opponents fan base or thrill a lot of fans in general. Conversely, of course, there is no reason he has to thrill them.
As we used to travel around and before Geno mellowed a bit - I can assure you, folks at numerous schools, some of whom never played UConn, all expressed the opinion that he was a great coach, but they didn't like his remarks. Repeat of the above - do you think he cares or that he should?