if you cannot trust the receiver to not publish fake zaps, you cannot stop zapwashing.
and even then fake zaps can be filtered because they don’t come from real accounts
Discussion
I think the point is with a token drawn on a mint at least you can be certain that x sats were drawn on y mint and locked to z pubkey. Which, while still game-able, is a level of certainty above what you can get with LN zaps.