No, it's considered "hate-filled" simply because Pat Buchanan delivered it. If Al Gore had stood up and delivered this same speech at the Democratic convention, he would have been praised for his "moral strength" or something like that.
Did I miss something, or were the words "culture war" never mentioned. I looked at the speech and say that there is nothing hate filled about it. I guess the talk about the mobs of people at the LA riots was supposedly taken as racial?