Maybe it's because I don't consume as much news media as I used to / use social media less, but people overrate how important these speeches are and how many people actually watch
Further, Donald Trump is the most known figure in politics today and is polarizing beyond belief. Everyone has an opinion on him. The downside to that is that he has a hard floor politically, but the flip side is that his ability to sell those who disapprove of him (which is what he needs to do to help his party) is near impossible at this point.