@juiceboks: yeah I mean it make no sense scaling wise.
I mean the ability was use a grand total of 1 time. Against normal person who wasn't really stronger than him so for all we know it could function like all the other haxs in in the series and just failed the moment it is used against someone stronger. I mean it's definitely possible that could also have size or physiological limitl to it as well. But at the same time there's no proof that it doesn't work on Kaiju more larger and stronger than him.
I think it's much more likely to assume there is a limit, but where that limit lies is where we get into conjecture. And generally when it comes to this I take the context of the story and the limits of the character's overall power, which is why I say that him possessing planet level power would make no sense. Otherwise there isn't any real counterargument for someone arguing him transmuting a galaxy-sized creature into a galaxy-sized carrot. This doesn't apply to all hax, but for physical abilities I think it's a fair way of determining the most probable limitations.
The way I see it . yes a character needs to prove that have some resistance to a hax.But one hand you cannot assume a hack could work on something or someone it's a literally never been tested against. especially if it's at a higher level than what it has been shown to be capable of doing.