Opinions aside, it does an excellent job of that.
I did, many times its reverted by some account that has more rights than you due to the fact that he wrote more than you.
The system rewards people who write more with more power so the people who already wrote most of it also decide who or what can be added. Its a repository for information but its selected by people who have an aligned bias.
>it does an excellent job of that.
For the most part yes. If i want to read something about an animal, a chemical, a city etc. its perfectly fine. If its about politics related stuff its not. Historical stuff is also questionable sometimes.