@ZEUS runs a lightning node integrated into the app; there are no excuses.

Do you use it? Because I did and it's not for any Signal user to do it, many things are hard to understand. You will get a lot of questions and frustration like: why do I "lost money" the first time I receive sats? Why I cannot get "zapped" 21 sats just for fun? What mean "my channels were closed"? Why do I have money "on chain" that cost me 30% to withdraw? Most normies would loose all trust in it the second it cost them 10 cents for using it. Cashu solve this and many more. You can get as low as 1 sats "for fun", "to test", then slowly get more and when you want to move next step, anyone is free to transfer to any Lightning wallet or even onchain if whished andy for it.