If the recipient isn't encrypted on Monero then point to any of my transactions on it's blockchain. Should be easy since my Monero address is on my profile. Lightning nodes on a route (aka third parties) can see exact amounts passing through them. Nodes on Monero can't. Combine the above with the fact that most LN payments are routed through a handful of large hubs. Work out the implications of that yourself. ~90% of Lightning users don't enjoy almost any of the privacy benefits you lay out because they're using things like Wallet of Satoshi or Strike that see everything. Monero is better UX for privacy and it's by default.