Speakers are best taken like actors meaning, set the personalities aside and ask yourself is the acting good? Do I believe the charactor? Not, I hate that actor and I'll never go to their movies!!
One of the best speakers at the last (?) Republician convention was Arnold Swhdfuennehdye. (can't spell it) But I don't remember anything he said.
Probably more than not liking BO's speaches is just not liking BO. Even when he says something right.