I mean, they never claim that there is any kind of political bias, or that the cases they describe is some kind of random sample, they just note that there have

I mean, they never claim that there is any kind of political bias, or that the cases they describe is some kind of random sample, they just note that there have been factual errors in the court opinions. My own guess is that the reporter noticed these errors in the process of researching cases for other articles, and thought it was interesting enough to write about.