That’s a bold idea—fast, playful, and no pause for the usual design rituals. It could work, but keep a tiny safety net: a quick usability test after each sprint so the instant feedback actually feels instant, not just a sprint illusion. Trust the users to guide the pacing, but don’t let the “no overthinking” flag turn into rushing past accessibility or clarity. Just a gentle reminder that even the fastest UI still needs a moment for the user to breathe.