Pretty sure that unless you are watched by the NSA, any LN payment that you make from your own node is private enough.
Discussion
Leave him be. Stacking Monero is one or two years from being a Bitcoiner.
We just need bitcoin validity rollups requires a soft fork. Not only improves the scalability of LN but allows end to end encrypted zero knowledge proof transactions like Z-cash on bitcoin. bitcoinrollups.com 👍🏻