This is still a fallacious analogy because it's clearly exaggerated/fictitious and nobody argues like this. If it was instead:
A: We should torture indigenous people by killing their offspring in front of them.
B: You are acting in bad faith
Is totally acceptable - anyone arguing something like point A is most certainly not engaging in a ''good faith'' discussion, it's plain common sense that they aren't.
If you want to argue in terms of strict ''logic'', ''faith'' isn't even something that would ever ''follow'' from a statement anyway, so to say that following a statement with ''you're acting in bad faith'' is a ''non-sequitur'' is a meaningless statement. Unless you're reducing bad faith actors to people coming up and saying, ''hey everyone, I'm acting in bad faith!'' (which the vast majority of bad faith actors do not do) - which is ridiculous.