To me, the like on Nostr is more of a nod to a passing stranger or a slight hand wave from the steering wheel to a driver being Courteous. It’s just a “hey that’s a good comment/thought/picture” but not worth a full conversation. I could careless about the notification though. I guess it’s a good quick signal that folks are listening and either like or don’t like the content in a minimalist sense. Zaps are a much more appreciation of the content and replies are interactions that want to take it to a conversational human level.
Discussion
Agree in terms if organic use, but its thr exception imo. FB ingrained the behavior for likes way before bird app. The pattern that doesn't seem to go away is engagement farming across all subsequent modeled services. Insta collapsed under this weight, and bird app has too. Reddit remained steadfast for up/down votes, but that gets abused also.
As soon as there is a metric, people start gaming it to pamp their profile/post/advert, and then gaming signals end up outweighing organic use. This is true also for follower/following metrics. Filtering the tribal affirmation likes economy from discussion is an unsolved problem.