User blog comment:DancePowderer/The March of...Progress? 845/@comment-3185063-20161103155649/@comment-28995593-20161104145114

I don't know the andwer for you're question.

I also never thought Luffy could resist eating and I think its not the time to start

And one thing I'm sure. If Luffy will battle all these powerful enemies, he will get stronger but I think Haoshoku Haki absolutely not working on them.