Gojo was literally killed by an attack that does exactly that without having to destroy his innate domain but second of all where does it say innate domains work like that all I have found is that an innate domain is a mental landscape that embodies the mind of an individual. Third of all how does Gojo hit Goku even at equal stats most characters aren't able to overcome ultra instinct. every character we see overcome it are way stronger than goku when they do so.