Memes are always the lowest common denominator compared to more community specific oriented posts. A meme can be digested in 5 seconds or less so people are easier to upvote it and move along.
Compared to more specific posts that usually requires you to read the whole post or visit the link to truly digest and then decide whether you want to upvote it or not.
They meant that AFAIK DALL•E 3 has some protections when you’re trying to generate copyrighted subjects.