Yes, it is possible to use lightning with strong privacy, but most people can't. That's issue. Even the biggest retard has very strong privacy by default when using monero.

Would you ever use cash to buy something privately despite the fact that the dollar is going to zero against bitcoin? Of course you would. Use monero is no different except it's digital cash. You can hold bitcoin and spend monero.

ACINQ, the company behind Phoenix, knows almost everything you do with that wallet. It's privacy cannot be compared to monero.

Several people have been traced through a Wasabi mix, for example: https://www.youtube.com/watch?v=alcLdBsoDDg