Except in that article, “adversial” is being used to mean “openly partisan”, or put another way, unabashedly biased.
I don’t know about you, but I don’t want bias in my news reports.
When your news organization has an agenda, it falls prey to things like “confirmation bias”. The last thing I want is to be getting my information from a source that is very likely to overvalue evidence that supports what they already believe while undervaluing or ignoring evidence which goes contradicts those same beliefs.
