He was defeated by VA kizaru and sent to Impel Down. He was released because of Jinbei.He very well knew Jinbei is not going to help him again if he gets capture by marines.
Then he went to East Blue and planned to rule it. He knew very well that if marines knew about his plan then he will face strong VA level guys again(and he was not prepared to face them at that point of time).
You're right about ID but if he was scared of the Marines catching him and going back to ID he'd be mobile and staying on the move not setting up shop on one island and building a giant building in your name that the Marines can easily find. Even Moriah stayed mobile while he was running/hiding from Moriah. You can't call it hiding if you're not moving and advertising where you're staying.
There's also this bit about Arlong Park on the wikia;
Arlong Park was the Arlong Pirates' base of operations. It was located on Conomi Islands. This building, boasting several stories and their Jolly Roger at the top, was conspicuously placed at the coast to show that they had no fear of the law.[1] Plus the fact that he threatened to kill any marine who threatened Nezumi so he's obviously not so scared of the marines that he won't kill some where on the other hand Moriah won't think about attacking one of Kaido's subordinates for fear of Kaido's retaliation.
U are using real life logic. Real life logic doesnot works in Mangaverse. We already saw Rayleigh who is like in late 70's have a body like this
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not to forgotton that he started working as coating mechanic after Roger died. So if we use real life logic then he shouldn't have a body like that(since it was never said that he continued training and lifting weights).
Even somebody like WB kept on fighting after getting a heart attack in mid of a f***in war. How the hell can somebody keep fighting after a heart attack???
It's not just real life logic it's common logic, if you're killing some of a group and bribing others of that same group to keep it quiet and they do then that's a very poor example of being afraid of that group.
Also you're comparing a manga with known odd proportions to real life proportions so if I can't use real life logic why do you get to use manga drawings as actual representations of the human body? There are 70 year old people in great shape that's not unrealistic.
There's levels of heart attacks, people can still do stuff after having a heart attack depending on the severity and the individual.
He didn't changed Nami's island name. I think it was his palace which was named Arlong Park. As far as i remember Nami's village was still name cocoyashi.
Nami's village was cocoyashi yes but the island it was on was renamed Arlong Park once he took it over.
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And just because some random fodder found him and he started bribing him means he wasn't hiding well then I guess Moria was also not hiding because so many fodders found his island.
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not to forgotton even a shichibukai easily found him(what makes u think Kaido can't find this guy if he was serious?)
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You're comparing two different things and calling it apples to apples. You claim Arlong was scared of the Marines and hiding from them, I claim Moriah was scared of Kaido and hiding from him and somehow you equate Arlong bribing and killing those he's "hiding" from to Moriah killing random pirates who have no affiliation to Kaido. Ok?
Because Kaido isn't interested in going back into the GL which is what Moriah was relying on. He believed Kaido wouldn't chase him where he went, Arlong knew the Marines would still be after him even in East Blue. At least compare apples to apples.