Alsup absolutely did not vindicate Anthropic as "fair use".

> Instead, it was a fair use because all Anthropic did was replace the print copies it had purchased for its central library with more convenient space-saving and searchable digital copies for its central library — without adding new copies, creating new works, or redistributing existing copies. [0]

It was only fair use, where they already had a license to the information at hand.

[0] https://storage.courtlistener.com/recap/gov.uscourts.cand.43...

This hasn't gone to Supreme Court yet. And this is just USA. Courts in rest of the World will also have to take a call. It is not as simple as you make it out to be. Developers are spread across the World with majority living outside USA. Jurisdiction matters in these things.