Perhaps I don't understand it correctly, but doesn't journalism mean examining a topic from different perspectives based on evidence?
Additionally, if someone writes an op-ed or commentary, the author is expressing their personal opinion. So why should I buy a newspaper that does not align with my political or personal opinions? I thought that was the point.
From a reader's perspective, it would be beneficial to have a scoring and warning system that identifies poor journalism or indicates when something is a commentary or op-ed rather than objective journalism. Based on that, I can adjust, where I get my news from.
Basically, every newspaper works like this. Isn't it? And when I read two or three different newspaper, that fact-checks every article and mark opinions as commentary, there is no "echo chamber" right?.