My 2000 gram clown male is as gentle as any ball ever could be and I know people who have pieds that eat every time offered and are as voracious as any other ball.
Rumors about morphs being this way and that way are just that, rumors.

I also used to think albinos were picky but now that i have a female albino in my house(breeder loan) that eats any rodent and in any way offered and is over 2000 grams, I've come to the conclusion that they are all individuals just like people.