It appears that following recent protests and temporary closures of thousands of Reddit communities in June, some of the biggest subreddits, including r/aww, r/pics, and r/gifs, have held votes to dedicate their communities to the British comedian, possibly John Oliver. This means that these subreddits will now only allow photos and videos related to the comedian.
Subreddits are individual forums within the Reddit platform where users with similar interests gather to discuss and share content. Reddit users, also known as Redditors, typically join multiple subreddits to see posts and engage in discussions related to their interests.
While the exact context and details of this dedication to the comedian may vary, it suggests that the community members of these subreddits have collectively decided to focus their content exclusively on the subject of the British comedian, possibly as a form of appreciation or tribute.