The world is a dark place, better to reward any sliver of good than write it off for being tainted.
Realistically, they can never meet your bar no matter what because you have decided "they are scum". You hold this view despite never actually talking with anyone at Anthropic or engaging their views in good faith.
To answer your question directly: Staking your existence on your principles against a vindictive government is a much bigger deal than pirating some books.