It's not that they shouldn't license their content. I'm not a fan of OpenAI and their "fair use" of things, to be honest.
But this is the opposite of fair use. They're licensing the content, which means they're paying for it in some fashion, not just scraping it and calling it fair use.
If you don't like the fair use of open information, I would expect you to be cheering this rather than losing respect for those involved.