Worse than having teeth. Imagine having two giant teeth, but they’re built in there even more firmly so it sucks even worse if something goes wrong, and also they extend like half a foot or more outside your face. And you’re supposed to use it to eat? Fucking awful. Look at videos of toucans trying to eat. They’ve spent their whole lives practicing and it still looks awkward, like they’re doing their best not to fuck it up
Tbf you don’t have to keep a pet bird alone in an undersized cage, I used to follow some people on tiktok that did wildlife rehab for crows, they had an aviary built into their screened-in patio with something like a dog door to the outside, they would introduce new injured crows into the group through the screen to keep them from fighting then gradually move them into the common area, let them adjust and recover then leave when they wanted, a decent amount of the crows just stayed and would follow them around their farm through the day being awesome little pals
Wildlife rehab is the exception to this, someone has to deal with all the birds that are sitting in some grandpas house right now, waiting to be abandoned at the spca by his children once he dies. You can’t just release that one back into the wild at that point (plus your examples)