I was making a lightning payment this past weekend and saw a lot of confusion from the payee about the 'receive' screen on Wallet of Satoshi. This person was a merchant with an interest in Bitcoin, but they lacked the technical expertise to fully understand the mechanics of lightning. The concept of nodes, channels, and UTXOs were abstract to them and they just saw the technology as a way to make faster Bitcoin transactions.
The first thing I noticed was the vendor's confusion about the various tabs on the 'receive' screen and what they needed to do with the 'email address'. I explained that the 'email address' was unneeded here, and that they didn't need to do anything beyond showing me the QR code.
For those that don't know, the tabs at the bottom were for changing the QR code to either represent an lnurl, a Bitcoin address, a lightning invoice, or to change the screen to a camera I'm guessing is used for withdrawals. And the 'email' in the default receive page is what's known as a 'lightning address'.
My big gripe is that there was no 'point your camera here' near the QR code, or explanations for things like the 'copy' and 'share' buttons. There's also the problem of tapping 'customize' under the lightning address introducing more complexity. When tapped it says to 'Complete the 3 steps below to unlock your Custom Address!' even though the lightning address is already usable, as it should be, without completing any of them.
There was also the problem of specifying an amount. The vendor was previously told they needed to do this but was probably educated by someone who only uses invoices. A consequence of the non-standard interfaces and poor default interoperability between apps.
My biggest takeaway is there are a lot of low-hanging fruit for lightning wallet devs to improve the UX, and that goes doubly so for custodial wallets to at least justify the tradeoff of users not holding their funds. Simple explanations, better-hidden advanced options, and feature-parity with fiat payment apps is what will help drive adoption and is something the industry still sorely needs.