The fact that Bitcoin isn't yet accepted everywheree and for everything really underlines for me how few people have actually used Lightning. Whenever I show somebody how it works, there's always that "wow" moment. But why was it a surprise?

The problem is that normal people still understand BTC from the one half-remembered opinion piece they read in 2017, and are operating under the belief that transactions still take an hour to settle, rather than being instantaneous and irreversible — money transmission without the Paypal Problem. The public mind needs a cache refresh.