By now all of America SHOULD know much of MSM is biased. If they choose not to filter their news sources in at least an attempt to find out what is true, that is on them. MSM certainly should be held to the fire, but so should those consumers who only read or watch right wing news or left wing news. They are caught up in an echo chamber by their own choosing.
I don't necessarily disagree with you, but there's a large set of the population who are older and just don't know any better. They've watched their mainstream sources and trusted them, so they have no reason to doubt.
This is how so many Biden voters had no idea about the Hunter laptop at election time.
I am fine with biased sources. But not fine with biased sources sources that claim neutrality and journalism. Fox has always been conservative, and I've found it easy to distinguish when they are making tangible points, and when they are just spouting partisan sensationalism. The left leaning ones are the ones have given the illusion of being non partisan while actually being propaganda wings for the left.
But neither reported Trump's term fairly - the left attacked 24/7 and Fox/Conservative sites he could do no wrong 24/7, so neither side who fit your description above were able to get the true picture of him.
Saw a post the other day that said:
1% of the population controls the world
4% of the population are their puppets
90% of the population are zombies
5% are trying to wake up the zombies
The media outlets SHOULD be in the 5%, and driving the 90% number down.
But they're in the 4%.