Oh sure, if you are talking specifically about nostr zaps, these are not currently fully private in the general use (this is a public social network where you broadcast the fact that you zapped someone... all other users can see that User A zapped user B and that's the point of zaps). If you would want fully private zaps for some reason, then couple pieces are missing. All of these are fairly solvable pieces, but it hasn't been done yet (e.g. LDK supports Bolt12 and so any desktop wallet can add it, Zaps could support using bolt12 offers ("lno...") instead of lightning addresses, Phoenix/Acinq has released phoenixd that can be run on desktop and it has the same capabilities as the mobile wallet...). If you just want to receive anonymous donations, another option that's gaining some traction is Silent Payments. Some wallets are starting to support it, but not yet generally usable. So what exactly is the usecase you are arguing for? You want to have public social network where everyone sees your posts and your zaps, while you want to use this only via Tor and only via a desktop computer? What is the specific thing that you don't want people to actually see about you?