If you look at his past experience and success, it's inconceivable that he is the sole problem behind United's bad form. He joined United after he took a very average dutch side and lead them to 3rd place in the world cup. He's not an idiot.

Replacing Van Gaal right now would do nothing. A large proportion of first team squad is injured, and the players themselves are low on confidence or just don't care anymore. Let me put it this way: Picasso would be hard-pressed to create good art if he was asked to work with shit.