No. He’s wrong. Conservative ideas will still exist, but they won’t matter. The movement will be completely dead if Republicans nominate an open borders globalist liar like Trump. He is right that there are a lot of “political whores” you’ve been posing as conservatives.
From a gray hair: Conservatism is not only gone, so are many things in our country - morals, honesty, marriage is on its way out (40some percent living together), family unimportant, pedophilia soon to be allowed. Just name it- if policies or laws were good for our physical and emotional well being - it is on the way out.
We have to face facts, look to God and pray for the best.