1.
Characters can't use haki with sea stone cuffs on
As soon as Luffy got his sea stone cuffs removed, he was able to use haki:
Yamato used haki with cuffs on, which makes them not sea stone
2.
Luffy was able to use haki while touching them and destroy them,
which makes them not sea stone because Luffy can't use haki while touching sea stone and sea stone is said to be indestructible
Even someone like Shiki couldn't escape sea stone cuffs and had to cut off his limbs
Big Mom had do ask people to unlock her sea stone cuffs
Same for Kaido. He had to ask people to unlock her cuffs. If he could destroy them, he would've destroyed them himself
The whole imprisonment system gets thrown out out of the window if characters can just use haki, destroy sea stone and escape imprisonment
3.
No, Luffy's collar in Udon was not from sea stone. It was just a regular steel collar. That's why he was able to use haki with them and destroy them
4.
Yamato's cuffs were exploding cuffs. How can they explode if they are sea stone? Sea stone is indestructible, they wouldn't explode
5.
Yamato never mentioned anything about Sea Stone. She only mentioned that they explode
EDIT: someone pointed out another good point
6.
Yamato was imprisoned since her childhood when she didn't have a devil fruit. If those cuffs were sea stone, she wouldn't be able to use her devil fruit for 20+ years.
Yet when she was fighting Kaido, she knew how her devil fruit worked, all its forms and attacks
You literally have to ignore the whole story to take Vivre Card statement as true.
It's just a cheap merchandise made for a consoomer with no brain
Characters can't use haki with sea stone cuffs on
As soon as Luffy got his sea stone cuffs removed, he was able to use haki:
Yamato used haki with cuffs on, which makes them not sea stone
2.
Luffy was able to use haki while touching them and destroy them,
which makes them not sea stone because Luffy can't use haki while touching sea stone and sea stone is said to be indestructible
Even someone like Shiki couldn't escape sea stone cuffs and had to cut off his limbs
Big Mom had do ask people to unlock her sea stone cuffs
Same for Kaido. He had to ask people to unlock her cuffs. If he could destroy them, he would've destroyed them himself
The whole imprisonment system gets thrown out out of the window if characters can just use haki, destroy sea stone and escape imprisonment
3.
No, Luffy's collar in Udon was not from sea stone. It was just a regular steel collar. That's why he was able to use haki with them and destroy them
4.
Yamato's cuffs were exploding cuffs. How can they explode if they are sea stone? Sea stone is indestructible, they wouldn't explode
5.
Yamato never mentioned anything about Sea Stone. She only mentioned that they explode
EDIT: someone pointed out another good point
6.
Yamato was imprisoned since her childhood when she didn't have a devil fruit. If those cuffs were sea stone, she wouldn't be able to use her devil fruit for 20+ years.
Yet when she was fighting Kaido, she knew how her devil fruit worked, all its forms and attacks
You literally have to ignore the whole story to take Vivre Card statement as true.
It's just a cheap merchandise made for a consoomer with no brain
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