I have actually. The way it's always worked for Reddit (and social media in general) is that you provide them a license to do things with the content, but the site doesn't take ownership of the content. This isn't a meaningless distinction either. It's a key part of Reddit's legal shield from all the illegal content they unknowingly host, via things like section 230.
> The Services may contain information, text, links, graphics, photos, videos, audio, streams, software, tools, or other materials (“Content”), including Content created with or submitted to the Services by you or through your Account (“Your Content”). We take no responsibility for and we do not expressly or implicitly endorse, support, or guarantee the completeness, truthfulness, accuracy, or reliability of any of Your Content.
> By submitting Your Content to the Services, you represent and warrant that you have all rights, power, and authority necessary to grant the rights to Your Content contained within these Terms. Because you alone are responsible for Your Content, you may expose yourself to liability if you post or share Content without all necessary rights.
> You retain any ownership rights you have in Your Content, but you grant Reddit the following license to use that Content: