So? You can't dedicate an order of people to defeating the Sha, and make excuses for yourself when the most powerful one appears and your entire order fails.
All I'm saying is...the Pandaren were fools the entire time, as the last King implies in 5.3. The worst crime the Pandaren committed was thinking they were any better than anyone else. The last King could never defeat the Sha of Pride, and neither would any of the Pandaren who followed him.