Well, I was going to jump in, but I see that everything has been covered
. Anyway, yeah, there's no difference whether you use laser surgery or traditional surgery to de-claw a cat....just like if you have your toes amputated, it doesn't really matter whether the doctor uses a laser or a scalpel. Just that with a laser there's less chance of serious bleeding. That's the only difference. The toes are still gone. FOREVER.
I have seen the studies that claim that de-clawed cats do not have higher chances of litterbox problems or aggression. I understand this is a hard thing to quantify. But, in my personal experience, de-clawing does not usually have a good effect on the cat's personality, and litterbox issues seem to be very common in de-clawed cats. But this could be because, if a fully-clawed cat won't use the litterbox, the owners just let him outside and he's OK with it. But some people won't do that with a de-clawed cat.
De-clawing is inhumane and usually totally unnecessary. This is the reason people should not have their cats de-clawed---not because they're afraid of personality changes, although this is a valid risk that they should at least be aware of.
But de-claws are highly profitable to vets, and very few will turn down that much in pure profit.