It's actually not like those examples though. All of his communications are muted, not just the annoying one. He cannot effectively signal to his flock if danger approaches, nor if he finds food to court them with, nor any sound to stop in-fighting. I think this is more akin to cutting off a dog's nose because you don't like the fact it gets into your trash. The sense of smell is the primary sense of importance to a dog. So is the ability to verbally communicate in a chicken/rooster.
I'm all for surgeries on animals that improve their quality of life, but this one is entirely for human convenience. It would seem to me that if you dislike a major feature of an animal, you shouldn't decide that you can just cut here, snip there, and get a designer product. Just get another type of animal. For example. I detest parrots because they are freakishly loud. And I mean detest. I never once said to myself "you know, all that parrot needs is some cutting, and it'd be nifty keen." I just don't own parrots.
I've had roosters that I couldn't keep. I made the effort necessary to relocate them to new homes. You can't have everything you want in life, that's just how life works. Crippling an animal because you can't come to terms with that? Doesn't seem right.
This is the thing though: What happens to the overwhelming majority of roosters out there? Most of them are killed and (hopefully) eaten. I bet if you were able to survey the roosters, and let them decide going to freezer camp or being "crippled", I'll be that every single one would choose to be alive. The ones that would choose freezer camp are probably the ones who misunderstood the question (being chickens and all).
It's not like there's tons of farms with huge populations of bachelor roosters. I imagine that more than 90% of all roosters hatched don't live the first year. Isn't something that would change that statistic at least worth considering?