I've noticed that the bird community in the few online ones I have been in are very respectful when talking about opinions.

I think it is because even if we are all completely different people, we all have an obsession with birds and because of that, we really understand each other. I love bird people. <3
But moving on. I don't really have a set opinion on hybrid birds. I majored in anthropology, so I studied biological processes and evolution (though mostly in primates, we did discuss birds being dinosaurs one class period). We have natural selection, which is the progression of beneficial traits through lineage, and there is artificial selection, which is when the progression of traits is manually altered by humans for a specific appearance of an animal. Actually, this is what helped us domesticate animals in the first place, so to a certain extent, it is the desire to artificially control traits that makes us human. It helped us create society because animals would do some of the work for us so we had time to create cities and culture. We are the first species to ever do it. The issue with artificial selection is that eventually, we started breeding for appearances rather than working ability. So basically purebred dogs are a sham. Dogs with flat faces like pugs can barely breathe and some breeds have serious bone issues because their ancestors weren't really allowed to create the genetic variation required to create healthy dogs. Natural selection relies on variation. If an species' genetic variation is low, the species has a much higher chance of extinction (we see this with cheetahs currently). The difference between natural and artificial is that in natural selection, the animals with traits that are beneficial towards survival (faster runners get food first, or darker colors help camouflage from predators) are more likely to create offspring and pass on the beneficial traits. That's what is kinda iffy about artificial: we don't really care about the traits necessary for the animal to survive. We care that the traits more appealing to us are passed down.
My point is: we don't really need artificial selection anymore. There are points where it is going too far. I'm mainly talking about those poor pugs who can barely breathe (sorry if you have a pug; I like pugs too, but I really do feel bad for them). I don't think birds have really hit that point yet, so I personally don't think there is much wrong with it unless it gets out of control and really does become harmful for the birds (please educate me if it has, and I just missed something). But the real point is it isn't really necessary. We just like new colors. (I'm mainly talking about crossing macaw and macaw. I'm very cringy about hybridizing macaws and conures personally) I'm not really completely educated on what conservation experts of macaws think of hybrids, but I thought I would put this perspective in there.

Hybridization may seem like a great idea, but it can have serious consequences. And someone else made a good point that we may not have enough parrots in the wild to start playing with bird traits yet.But I do kinda stand in the middle of this issue.
Disclaimer: I'm not the most knowledgeable on parrot species, so totally correct me if I am completely off balance.