I don't understand why anyone would de-claw a cat. Maybe as some sort of extreme measure if it's an adult that's actually seeking people out to harm?
Other than that... kittens are scratchy! They don't have the same control over their babyclaws as adult cats and they're playful, so scratches happen. I got tonnes of scratches from our cat when she was a baby and she's the friendliest cat. She's only about 18 months old now and she never scratches anyone any more, and the kids pester the **** out of her

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So basically there's just no need. They'll grow out of it when they hit adulthood and keep their claws retracted of their own accord! And if it's because of scratching furniture, if you provide a good scratching post it's very easy to train them not to do that either.