Before the Tacoma City Council voted to ban cat declawing except when medically necessary, a leader said the time was right to "choose cats, not couches."
I feel the same about tail and ear docking, though with certain dogs (boxers I hear get repeated tail injuries) it seems there are still some legit reasons.
If want a cat, it's going to scratch, it's their nature. Why would you want a cat if you don't like basic cat behavior?
Same as bird clipping. It's a bird, I understand that there are some risks for flying animals, but why would you want a bird in the first place if you are going to cut its main mobility tool. Would you amputate one of your newborn's legs so it has less risk of wandering around and being hit by a car?
I mean, my comparison was more aimed towards the fact that they lose a shit ton of mobility for a reason that, if anything, shows your lack of ability to care for a bird. Also, while the feathers do indeed grow unlike human legs (and excluding prothesis), that doesn't mean the owners will stop clipping them, plus, depending on when they started doing it, the bird may not even know how to fly and may not do it even if they are fully grown unless taught.
Now that I think about it, it's probably more akin to breaking someone's legs, though without the pain (unless whoever makes the cut really botches it)