Bitcoin's success did not need professional product designers, either.
Nostr needs product designers as much as Bitcoin does. Neither is a product.
Both are protocols each of which allow a network to develop organically, and there is no better proof of genuine superiority than organic growth.
Nostr apps do need good product design, just like hardware wallets do, but that's a totally different issue.
You have built products yourself
@franzap. Honest question to you: What were the obstacles for better product design?