I think everywhere requires "capacity" to enter a contract, and Delaware does have this on the books: > 6 DE Code § 2705 (2019): Any person who has attained 18

I think everywhere requires "capacity" to enter a contract, and Delaware does have this on the books: > 6 DE Code § 2705 (2019): Any person who has attained 18 years of age shall have full capacity to contract; provided such person has not been declared legally incompetent to contract for reasons other than age. Any person who has attained the age of 18 years shall become fully responsible for that person’s own contracts. So I'd presume it would come down to what Delaware's Court of Chancery expects for someone to be "declared legally incompetent to contract." I'd imagine that's not something done lightly. (IANAL)