We mostly use figma for brainstorming and RICE-scoring, which can be hard work. Hence my lukewarm reaction. My other reaction was "cool, how’d he do that".

I didn't get to see it but that sounds actually like a really fun Easter Egg to discover when you're on the website together with someone else!

Can be distracting when reading the article of course, so it needs a toggle, but I'd not recommend removing it altogether. Maybe if you also let people share text selections, they can even talk and make a friend by selecting letters at each other xD or maybe I'm imagining too much now