givin that i really dont like that ghostbur and c!wilbur are two different people heres a joke turned serious headcanon about ghostbur
hes not wilbur. not in any capacity. hes actually a mailman that would read wilburs letters before he delivered them and got a massive obsession with this fake perfect version of wilbur (ala robin williams character in one hour photo) and through shenanigans got amnesia and/or died and was convinced that he was the spirit of will. this is why he only remembered positive things and thought he had won the election and why will doesnt remember alot of what ghostbur did cause he was actually dead at the time.
the reason he refused to have a serious in depth conversation about what he did, wether he realized it or not, is because 1 it could reveal he wasnt actually wilbur and 2 it would ruin the illusion that wilbur was a good person or had good intentions and just did some real fucked shit.
i am dubbing this mail man fakebur (kinda like faker? eh? eeehhh? well i thought it was funny)