So non-custodial lightning wallets aren't viable? (serious question)
Discussion
The usability is still a pain in the ass after 7 years. Only a few nerds want to manage their channels in order to be able to buy a coffee. Normal people can and will not.
Have you used a selfhosted lightning wallet?
bitcoin accounts (custodial): cheap and Easy.
bitcoin wallets (self/non custodial): Hard mode and higher cost of entry/set up.