This IS a touchy subject; another topic on which there will be disagreement.
I ALWAYS declaw my cats. Always. Although we keep them indoors, they do on occasion get out. My cats have always been very able to defend themselves against other cats, dogs, skunks or anything else they've encountered, and we live next to a forest…there has never been an issue or an instance in which our cats were ever unable to defend themselves. They can still climb trees.
I have yet to see a cat in any way acting as it it were in any way hindered by a declaw procedure - they are jumping up and on and off of furniture,etc the same day, with no appearance of discomfort as there is in case of injury.
I'm not going to get into a debate about this, except to say.... seriously, when people state opinions they need to be aware that not everyone shares your opinion nor has everyone had the same experiences, and not everyone believes everything they read esp. when it runs contrary to actual experience.
I think we have enough REAL forms of abuse to address with laws, and am always reluctant to let the government enter the homes of citizens.