This is quite true. They are one of the most laid back species I have. Only ever taken a single bite and that was my fault for handling after eating crab and I guess the smell was enough to trigger a feed response.
That is mostly down to the alterna community tending to be pretty insular. Once you get in to the groups though then they are not too difficult to get hold of
They can be. My female took mice pinks from day one. My male I had to soak pinks in anole puree and then wrap them in gecko shed. That little ritual lasted six months before he started converting over. Once switched over they will eat just about anything. Mine love quail chicks and tilapia