I'm sorry but you're wrong, especially in your generous use of extreme statements such as "show nothing", "any way", and "full privacy". Not only is probing a privacy concern for public channels but it's a concern for these "unannounced" channels you think are private as well. It's in my linked guide above, give that a read and let me know if you have any questions.

bitcoin

Explain to a normie how Privacy works on Lightning?

thrown

This is quite blatant not true. Probing will show nothing in terms of privacy.
[As I explained in this guide](https://darthcoin.substack.com/p/node-liquidity-guide) you can use private channels/ private nodes / keysend in a simple mode that cannot be traced in any way. Use your imagination, there are many ways to do it.