Kind of unreliable...
XMR transactions cost like $0.01 , confirm in 2 minutes , and you can 0conf if you want. Why dick around with LN?
Joel is a faggot that spies on people, he doesn't believe in privacy, he may say he does, but that's because he is a two faced psychopathic hypocrite.
To answer the rhetorical question literally: if you need/want to send Bitcoin specifically.
Sure, sometimes you want the Entire Internet to know exactly how much you have, where you got it, and where you spend it