Point is that giant should know the strenght of people like Shanks as they are friends with Giant Pirates yet he still was sweating when saying Loki would destroy the world if he's free. That's massive portrayal at this state of the story even if exagerrated.
It could also just be because he has a fruit for a mythical entity like Jormungandr, Garm, Fenrir, Surtur, etc that is associated with the end of the world.
I'll bet an arm Luffy would never get goosebumps/chill from sensing Midd presence.
I don't see Oda hyping the readers about a he to have Loki get folded as soon as he's able to use it. Most likely outcome is Luffy getting packed to show the power of the fruit if any.
I see him being like Saturn. Intimidating aura at first? Check. When he transforms/uses his ability for the first time will it be badass? Check.
Will he live up to the hype? Nope, it’s gonna be Saturn again. Luffy will ultimately clown him.
You're mixing things up, Loki was born after Dorry and Broggy stopped terrorizing the world lol. He was born like 60 years ago.
But the Giant Pirates still had not returned to Elbaf. So the current population having an accurate estimation of Dory and Brogy currently is questionable.