They aren't withholding the content on page load or requiring authentication, because they need search engines to be able to read it freely to get SEO benefits.

They aren't withholding the content on page load or requiring authentication, because they need search engines to be able to read it freely to get SEO benefits. They are tricking the search engines and to think they are giving content away to everyone for free unconditionally. They gave you the article for free, then added a bunch of CSS to make it difficult to consume. Modifying the content they already gave you for free is not stealing.