Countries have political skews so it's entirely possible for truth to be heavily skewed conservative in the USSR and liberal in the USA. This is why the let's cover 2 points of view press is garbage. 2 points are 2 conservative war hawk dominated parties in the US.

An article on global warming would be described as "leftist" in the US despite accurately reflecting reality. How else would you word the fact that american conservatives reject reality in a lot of cases? Remember, a significant amount of these conservatives openly believe the earth is 6000 years old and that geology is a satanic ploy to make people doubt god.

"Breaking down polarization ratings by ORES article topic areas, "we cannot see differences among macro topics". This "general trend" was also found for the top 10 (sub-)topic areas and the top 10 Wikiprojects, although with "minor shifts [...]. For example, the topic sports has a higher conservative-leaning fraction of citations, all the while maintaining a liberal-leaning skew. The WikiProjects Politics and India are more liberal-leaning than the average, instead. Taken together, these results confirm that the overall trend towards liberal political polarization is not specific to some areas of Wikipedia, but seems to be widespread across topics and WikiProjects.""

In what way does your theory explain that sport articles should reflect a leftist world view?

Many if not most of those who are liberal enough to "believe" in global warming also believe in countless other forms of dumb shit that's even more stupid than the Earth being 6,000 years old. Otherwise they would reject religion outright, or in the other case accept it as ansolute. Whatever someone believes is only loosely related to their other beliefs, science or not. Observe what people do in practice, not just listen to what they say, and you'll find lots of fake Conservatives and Orthodox Progressives.