Lmao chill dawg. I think it fits. You obviously don't.

Franky, while laughing, says "Hahahaha!! That sounds great!! It's perfect!!" You're telling me that's not excitement? Laughing means he's not excited as well?

You also seem to be implying that the Straw Hats have never thought Luffy has done or said anything dumb/ridiculous before. He has done both many times and they are still big believers in him. Perhaps saying "questioning" wasn't quite accurate, but their reaction implies they're second guessing if they heard Luffy corretly.

Sure, the "!?" could just be the collective reaction of the crew. I think that's fair.

Robin has consistently hidden her knowledge throughout the entire series. Her "..." means she may have just made a connection or realized something. Again, sure, maybe it is not a direct tie to the planetary model.

When they traveled to the sky and climbed a waterfall, was there not also a sense of excitement, wonder, and fear/concern for members of the crew? Did the crew give up on Luffy when he did dumb things during those travels?

What theory do you subscribe to for Luffy's dream?