Why there is a aversion towards single founder startups from VC's and incubators

Because there's a single failure mode. If your project is hosed after one guy gets hit by a truck, it's a risky project - no matter how good everything else looks.

According to this: http://startupgenome.cc/

They have some stats that say its not a myth.

Stats are wrong..

an aversion

and incubators usually are full of shit, they want you to do what they want in the way that they want.