The rubric is literally right below what you quoted
The categories are as follows:
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Biased Wording/Headlines- Does the source use loaded words to convey emotion to sway the reader. Do headlines match the story?
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Factual/Sourcing- Does the source report factually and back up claims with well-sourced evidence.
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Story Choices: Does the source report news from both sides, or do they only publish one side.
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Political Affiliation: How strongly does the source endorse a particular political ideology? Who do the owners support or donate to?
Just because it is a qualitative and not a quantitative assessment doesn’t mean it’s arbitrary.
All of that is irrelevant to my point that your right wing government has policies that would be far left in the US