[moregrist]

I suspect there’s a middle ground that involves either keeping tests more proprietary or a copyright license that bars using the work for AI reimplementation, or both.

I think it’s entirely reasonable to release a test suite under a license that bars using it for AI reimplementation purposes. If someone wants to reimplement your work with a more permissive license, they can certainly do so, but maybe they should put the legwork in to write their own test suite.