I love how the content belongs to them when someone else reposts it but it belongs to the user if the content is illegal. Such a double standard with these social media and AI companies. Why do we put up with it?

That is what all LLMs could do in 2023, verbatim, before they trained it out of them in order to keep up the pretense that there is no plagiarism. Now they all obfuscate the original or refuse to cite.

There's a button on X that allows me to repost someone else's content.

Grok can do that if you give it an HN thread or other websites.