I THINK THIS WHOLE WIKIPEDIA UNTRUSTWORTHINESS THING IS PLAYED UP A BIT. ANYONE CAN EDIT IT, YES, BUT ANYONE CAN RE-EDIT IT AS WELL, AND SOME PEOPLE TAKE EDITING WIKIPEDIA WAY TOO SERIOUSLY.
TRUST ME, THE AMOUNT OF BUREAUCRACY INVOLVED IN EDITING THE SITE IS FRIGHTENING.
TROLL ANY WIKI ARTICLE AND SEE HOW QUICKLY IT GETS REVERTED.