I honestly don't like them either. I posted there explaining Dudley's situation, and got a bit of a passive aggressive vibe (especially from one specific member who shall not be mentioned). I felt judged and criticized, for not knowing what to do. There was one person who was really nice, though it would've been better if everyone was like that. So eventually, I just left.

I don't really follow the parrot wizard's methods, anyways. I think Micheal (the parrot wizard) is a good trainer, but he doesn't focus very much on aggression issues. Yeah he has a few tutorials, but they're not enough. Birdtricks actually does talk more about it, and I've found their methods much more reliable, just from the free tutorial and explanation videos on their youtube channel, as well as the tips on their Facebook page. I find them a little more laid back and approachable as well, and have chatted with the one running the facebook page, a few times.

It would actually depend on the conure there. A green cheek is small enough for petite, according to the website, but a larger conure species like a sun conure, would need an extra small. So in some ways, he's right, and in other ways, he's not.

The issue there is probably the lack of specification, which is bad when you own a bird like a Conure. If someone with a sun conure saw that and got a petite, it wouldn't fit.