It's not primary the content…

It's not primary the content of your note that gets zapped, it's in your case the person behind the note that is getting zapped ⚡
Nostriches value what you did for them and therefore, what ever you post is getting zapped.
If a nobody would post just the word "Zaaaaaap", chances are low to attract zaps, simply because no value is received, nor is there any reach of the note to attract potential zaps.
So don't be sad, the value4value market is working as expected 🤙 "Zip Zap Next Note"