I'm not a member of the ELCA and had never heard of Martin Marty so I looked him up. He is listed on the ELCA website as being a "church historian". He spent most of his career as a professor at the University of Chicago Divinity School. Although he is on the board of regents of an ELCA-affiliated college, I could not find a reference to his ever having held an administrative position with the ELCA, although he was a Lutheran pastor from 1952 to 1963.
The MSM has no interest whatever in making Marty's life difficult.
You have a distorted view of how the world works. If Lutheran pastors were found to be molesting kids, it would be big news. It might not be quite as big a story as the RCC scandals unless hundreds of Lutheran pastors were accused of abuse. You don't hear about these things because they are not happening, not because the "MSM" is protecting a 77 year-old emeritus professor.
My views are Roman Catholic and conservative and, if you think them distorted, that is your problem and not mine. I am pinging a couple of others, one ELCA and one Catholic to join in discussion as to the nature and background of Dr. Martin Marty.