He's still the strongest top tier right now but you know i'm not on board with mindless wank claiming he's casually island level, nothing in the iceberg feat indicates anything of the sort, but this is for another thread. No one in OP is that strong.
No swordsman has replicated that, but Akainu/Aokiji changing the climate of PH is vastly more impressive, think of those volcanoes Akainu is responsible for, dozens of megatons of energy and more, with just the side effect of his battle. The ice is not as durable as steel, Aokiji just used haki...
that waist is fucking scary