Regarding the national NPR newsroom, I think this story will provoke positive change, as indicated in the article. There is no media which every person would consider unbiased, and very few media organizations take action to even attempt to reign in biases. The fact that editors will start reviewing coverage more closely to remove tilt sets a higher bar than all but a few news organizations.
I chuckle thinking about a reporter stepping out of another random news room in the country and spreading outrage that the coverage has a bias. The response would generally be: “Yes, duh.”