I didn't realize Anthropic is a person and doing all of this for his/her/their personal use that is never shared with anyone else, and even more never for financial gain. What a fun hobby. /s
It might still be allowed for other reasons, but "personal use" isn't what they claim in court.
I am not allowed to read a book many times until I memorize it, and later record an audiobook of one of its chapters for money.