What do you mean? It's pretty damn clear how copyright and courts work, but let's review:

1) when a large copyright conglomerate sues a teenager: 30.000 USD per violation + enforcement of the license by an armed police officer coming to their house.

2) when a teenager has copyright violated by a large copyright conglomerate, or any large company: change the rules and force a compromise, resulting in $0 in damages.

In fact it has just been made clear that copyright DOES NOT protect against AI training. That's "fair use".

But let's pretend the courts are fair. Let's say I take all disney movies and tell AI to make a new one. Will courts suddenly decide Disney owns the copyright on both the model AND the movie? 100%.

> was Claude trained on chardet? Is that really clean room?

Not a true clean room; the TFA notes:

  ... Every file is different. Automated plagiarism checks report only 1.3% in common code ... the reimplementation looks very clean. Different code, different algorithms, and better performance.