Yes, that's exactly what he's saying. Remember, until Trump, the GOPe was nominating Presidential candidates who didn't want to rock the boat, so they stayed silent when attacked, didn't fight back, and allowed the media to easily paint them into a corner, because they wouldn't defend themselves. Trump was a breath of fresh air. That's why they hate him so much. You're supposed to remain passive, and not say anything untoward about your political enemies, even if they are from your own party. Trump never should have given Christy, or a lot of the RINOS, the time of day, but then he would have been attacked for that too.
I agree, that is what he is saying. What I disagree with is what he is saying.
But McCarthy is neither moral nor right in his calculations.