Where did I say that? 😂
Here is our conversation
Monero user nostr:nprofile1qqs27aqdrx96hwx8hqks53ccav65hvlk47dfscumsh22tncnw89t4pgppemhxue69uhkummn9ekx7mp0qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qghwaehxw309aex2mrp0yhxummnw3ezucnpdejz7q7z90p says monero has better receiver privacy than lightning. I issued him a challenge. Will he accept it? 
Discussion
Oops, sorry! You said "better UX for privacy," not "better privacy." Well, I was able to use that slick privacy UX to dox one of your one-time-use addresses as well as the exact amount of xmr in it. Your turn: can you dox my lightning channel and the exact amount of btc in it? We're waiting! Let's find out if the privacy UX of monero really is as good as you say!
Don't miss the exciting conclusion to this little drama! nostr:nevent1qqsdpyuve6csqe30ej6rtusftcc3z4xxae8xdaqjlz77kqhzzluwlgcpzemhxue69uhhyetvv9ujumn0wd68ytnzv9hxgq3qyxp7j36cfqws7yj0hkfu2mx25308u4zua6ud22zglxp98ayhh96st6xzz5
In my opinion this is all theater.
Using a view key to see the details of a transaction is part of the design of monero.
I think both sides of this tedious argument have been constantly making half-baked claims about something on the other side that fits their narrative for ages now. I am growing super tired of it.