Moore is a dishonest filmmaker. His films often misrepresent and distort the actual facts. He stages events and edits his films so that what you see on the screen is different from what really happened.
I think he was more sincere before he got famous and later started to, simply, suck up to audience and build his ego. Pretty decent entertainment, though.
The politics of USA is for sure important to many countries on earth, however, there are still some other countries are not very subject to America and they have their individual perspective distinctive from America. Always bad practice in politics can be observed across peoples, cultures and countries and that is a part of human nature which is virtually impossible to be eradicated.