Would my characters attack or dethrone a god?

M would in an instant, lbr

his canon alternate helped kill God in his universe, for gods sakes

Roland would if necessary

Kirk would if his friends asked nicely enough

Judd would if his friends, family, or pack was threatened

basically "Yes under the right circumstances, except for M the right circumstances are always and yes please"

none of them would want to take the god's place. They would be more than content to leave a weird power vacuum, except in the case of Roland who would probably manipulate a suitable candidate to take dethroned god's place.