I definitely grasp it's a bold claim, but TBQH if you've ever actually used Monero you'd much prefer spending it than Lightning (in a non-custodial way). It is immensely more simple, has better receiver privacy guarantees, and requires far less management overhead.
I'm a big fan of the potential of Lightning, it's just not there yet and Monero is there, so it's a much better tool for spending for most people. I know many Bitcoiners who would much rather spend Monero than Lightning/Bitcoin L1.