To me the most interesting aspect of the story is not that RMS has a God card. The interesting aspect is that RMS decided that blocking the change was so important that using the card was warranted. As RMS stated himself, he is using this power so rarely that developers don't know that it exist.
Why was preserving an old joke important enough to do this?
My understanding is that RMS doesn't see it as just a joke but a form of protest through a joke relevant to the name of the function in question and that asking him to remove it is seen similarly to asking a protester to only protest in designated protest areas during designated protest hours where they cannot bother anyone. If you see it like that and not just as a harmless old joke, it makes more sense why RMS is riled up.
Why was preserving an old joke important enough to do this?