You talk about the MSM as if it was a thing, and not a term of propaganda. It may explain the confusion.
Conan O'Brien has some great segments on this: https://www.youtube.com/watch?v=TM8L7bdwVaA
They also do this for serious political stuff, repeating the same phrases over and over again, but posting those video compilations would just invite downvotes.
Perhaps you've been drinking too much of their coolaid.
"Mainstream media" was a term long before people on the right started complaining about it.
I don't actually know why the ruling class in the US is taking this so easy. There's some kind of brain disorder they have that is located between American exceptionalism, raw stupidity, and a complete disregard for the welfare of the people. I hope they all shake hands with a COVID patient like they did at CPAC.
People know full well that Fox is part of the MSM, but regardless of which way you lean, there's no question that the deck is stacked against conservative viewpoints.
That doesn't mean Trump is doing a good job.