

You are confusing “unbiased” and “neutral”. If one party is telling nothing but lies and the other party is telling only the truth, a neutral news source will tell you all about the ensuring drama, what the polls say, and how it might impact the next election. What they won’t tell you is who is lying and who is telling the truth. Most mainstream news coverage is neutral and that’s a big part of how most Americans are ignorant and misinformed.
Unbiased reporting actually cares about the truth and will report it even if that means taking sides in the political debate. Unbiased reporting is very leftist friendly because most leftists care very much about representing reality in their opinions.
Bias always exists for any non-trivial topic, but there is also a gradient from less biased to more biased. Using “unbiased” is something some people do to mask our autism. Your point is correct but utterly worthless. It’s also an excuse that many weak minded people use for failing to rise above our post-truth culture.