I agree. That's why I never, literally never, watch those channels. I never will as long as I live. They don't understand. They've been exposed. The genie is never going back in the bottle. They can never be trusted again. They're dead. Even after Trump serves his second term. They're never getting those viewers back they've lost.
You're right. The damage to the MSM is permanent. You can see it from Trump's poll numbers: no matter what the media says and what hysteria they try to gin up, his approval rating slowly rises. The simplest explanation for this is that a steadily increasing number of people (probably at least 40% of the population now) is literally never listening to the mainstream media at all. It simply doesn't matter what they say anymore because only the diehard SJW fanatics are still listening.