We're in an environment in which a handful of billionaire techbros (and aspiring ones) have simply taken most of the world's copyrighted material, and are using it to destroy the livelihoods of people who create it.
Why give them more stuff to steal for free?
(HN techbros are slow on feeling the pain of the greed and corruption, partly because we can temporarily ride the coattails of the exploiters. And partly because we don't have field-wide strong tradition of ethics and integrity, unlike some disciplines that are objecting fiercely to plagiarism and shoddy quality. But eventually HN will feel the livelihood impact, and many AI slop poems will be written about not speaking up when some earlier groups got wronged.)