92% of Lightning payments we routed went through a hub
Let's be patient and wait for year 2140 when last bitcoin gets mined... I am sure Lightning Network will be more adopted than, and be mega-private payment option 
PS
I don't know anyone heard about this, but another small exchange just closed their business, this time it was MajesticBank:
https://github.com/monero-project/monero-site/issues/2496