Is the FSF threatening Anthropic? The way I read it looks like they are not:

> We are a small organization with limited resources and we have to pick our battles, but if the FSF were to participate in a lawsuit such as Bartz v. Anthropic and find our copyright and license violated, we would certainly request user freedom as compensation.

Sounds more like “we can’t and won’t sue, but this is the kind of compensation that we think would be appropriate”