No bro.
I assume that Luffy's emotion-sensing has something to do with Haki and I'm saying that Luffy is not almighty Haki users that no one could block.
As much Luffy can sense someone's emotions via Haki as much this person can hide his emotions via Haki.
Do you understand what I meant now?
I know Luffy’s emotion sensing is due to haki. I literally have the example that Koby also has this same ability using haki.
You are assuming things. Such as.
1. Emotion sensing is a common form of haki as if Zoro can also train his haki to sense emotions if he wanted to
2. Yamato knows emotion sensing is common and knows luffy has it.
3. Yamato has a way of hiding her emotions from someone who has this haki (Something no has stated is possible)
These are alot of assumptions don't you think?