Likes are democratic whereas zaps a plutocratic. While a bot can like many posts, it can only give one like on a particular note. On the other hand I've seen just in my feed multiple people zap a single post the equivalent of 1 sat and another where 1 user zapped 50k sats ($14.01 USD at the time). This is a reversal of what we would have considered more successful previously with 3 likes to 1 becoming 3 sats to 50k.

It would be difficult to argue that bigger zappers aren't going to have an outsized impact on what others will post, particularly when all of this is publicly available and people can tune their posting to what is most likely to get them the biggest zaps. Perhaps this is the idea, but I'm sure you can imagine why people who want open, honest conversations would be concerned that this would affect the outcome of those conversations.