That's good advice. It looks like a lot of this is "I believe this and they believe that." That sort of thing goes on forever. But if you really know about a topic it carries a lot more weight.
If Wikipedia really is supervised by high school students they're in big trouble. At some point management will wake up and get professional or someone else will scoop away their market.
It is. Just look at the 10-member Arbitration Committee, which is Wikipedia's top tier of sysops aside from site owner Jimbo Wales. Half or more of them are either high school students or undergraduates in college!