How would you know which post the zap was given for?
What if the zap button on each post was a shortcut to the profile zap? nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s nostr:npub1sg6plzptd64u62a878hep2kev88swjh3tw00gjsfl8f237lmu63q0uf63m 
How would you know which post the zap was given for?
I think this could still be shown in notifications