You're esentially saying when you pay someone you "traced" it to the person you paid (no shit, what a revelation).

No, read the actual thread. He came up with a challenge separate from our original discussion. I never denied anything in his challenge about Lightning and Monero. It says right there in your screenshots.

Second, on the transaction level with Lightning, you're relying on third parties not colluding to maintain your privacy. Nodes on Lightning can see amounts going through them. Nodes on Monero can't see amounts even when using someone elses node and even if they colluded. Lightning nodes in a transaction are directly linked and know the hop before and after. Monero stealth addresses are unlinkable to other addresses. Technically, if Lightning nodes on your path collude they'll know with 100% accuracy both the amount and public node it went to.

The privacy he's describing gets even worse in the real world since most LN users are on non-private custodial wallets and LSPs (Compare custodial LN wallet downloads and the largest LSPs). Centralized honeypots of information that can see most of the network and directly reduces your privacy even if you're using it LN correctly.