That broad brush of a judgment doesn't work. Wikipedia is so massive, no human will ever have even a tiny clue what's all there. Go look at articles on botany or something and you'll see basically all facts and no opinions. Look at articles on people and politics… well, what would you expect?
I'm sure there's some way to create an evaluation of of the network of editors. We'd see that there are sections of Wikipedia where the editors all overlap and sections with near-zero connections, and those different sections are almost different worlds.