Ok, so you're in America. Cockies (as we call galahs) are as common as muck over here. Just about evferybody had a cocky when I was a kid and lots of people have them now. Every man and his dog wouldn't bother with them if they weren't good pets. I don't know what they are on about. Of course you can't stick them in a tiny cage and ignore them, they'll go stir crazy, same with any pet, there's a commitment and you have to like them, their noises, smells, habits, etc.
On the internet you'll get responses but you don't get the full picture. People whose expectations might not have been realised for whatever reason may have a negative opinion. It may be valid for them, but not as a general rule.
Also, every pet is an individual. You might get a "problem child" but you've no idea about the rest of the breed/species. One of my dogs has "issues" but I'd not tell people not to get a dog just because of him. He's not representative of other dogs, let alone all other dogs. Nor is any individual cocky.
We also influence what we get by our own foibles/inadequacies. My sister got a dog that she just had no idea about handling and it was a "nightmare". A male friend adopted that dog and I used to see them about the place and it was a wonderful dog with that guy.
(MY cocky is the best thing, ever. EVER!*

(*apart from the budgies, weiros, dogs, cats and bunnies)