to clarify: i'm broadly opposed to capital punishment, on the "what if we're wrong?" foundation of legal liberalism.
but, all rules require exceptions.
and, god's crimes are literally beyond parallel in scope and documentation.
could god receive a fair trial? certainly not. doesn't matter...
if
we can prove a god exists, then we can find a way to stop it from
existing, further; to an extent, proving that god exists is the same
thing as disproving that what we're labelling god is actually immortal.
the only open question in my mind is "how do we actually physically end god's existence?".
of
course, killing god will not put an end to faith. but, at least we can
point to the historical record, label them flat-earthers and move on.