So it started with a creator named Jools Lebron and is meant to be humor/self-satire.

Like I could say: “See how I post only on #Nostr? Very demure. Very mindful. I’m not like these other girls out here still posting to the app formerly known as Twitter. Very demure. Very cutesy.” 🤣

Without the whole meme context it’s a little hard to understand, but that’s the general setup.