Many still don't like for example most clients leak the DMs of who is talking to who you can check it on nostrudel.ninja.
But it's improving clients like amethyst and 0xchat have wrapped gift messages that solve this issue but it should be the standard.
Amethyst have tor connection and primal have a cache service to hide the ip all other clients doesn't so the realys can still make a log of the ips so a vpn is highly recommended.
Lightning tips can be traced back to the custodian and be requested data from authorities if needed, so choosing a ecash address would be better for privacy or even better using Garnet a fork of Amethyst that have Monero tips.