Why are you fixated on the fish? That was Pre-Yonko Shanks. It says nothing about current Shanks. What it does say though is that Shanks with two-arms who was equal to Mihawk per red databook was 'blitzed by a bandit and became fish food'. If I were you I would run away from that incident as it's a big yikes for anyone supporting Mihawk if his equal there had such 'shitty portrayal'.
I already corrected you. Mihawk calls Shanks a one-armed has-been and says a final decision won't be reached because of the arm. Meaning Mihawk won't duel him because he has one-arm, not because he is weak. It's about honour. See Zoro's comments about a scar on a swordsman's back. There is some sort of code of honour amongst swordsman. So Mihawk doesn't even consider Shanks a swordsman anymore as he doesn't have two arms.
What does that mean?
Shanks has not had an extreme battle since fighting Mihawk, there was no account of him having any world renowned battle after fighting Mihawk, WB hasn't heard his name in decades, we know Yonkou don't constantly have fights, its usually their allies or crew fighting, so where and how did Shanks grew?
He hasn't even eaten DF to get a quick power boost.
If 27 year old Shanks is fish food material, how am I supposed to believe 34 year old Shanks is any better?
If after all the growing he did in extreme diff battles with Mihawk didn't get him ready for fish, how does anything else get him ready?
If pre Yonko Shanks is fish food, maybe post Yonko Shanks can save himself from a fish after extreme diff battle.
Lol that logic completely falls flat when Mihawk is desperately waiting for one eyed Zoro to get stronger than Shanks and finally give him a challenge and Mihawk isn't some rando who is up in over his own head, he is someone who can tell how strong you are just by looking at you.
He looks at Shanks and knows it is not the man who stands even a fighting chance against him and he isn't bothered by him. That scars on the back example is so garbage because 1 armed Shanks is Shanks' identity now, where as swordsman hitting someone from behind is literally cheating.
Its not stated anywhere that one armed swordsman is not eligible to compete for WSS title right? Unless you think man with one arm can't get stronger, which then why would you suggest Shanks did get stronger after his duel with Mihawk?