if "the fundamentalists kill, maim, lie, cheat and are generally unpleasant" as opposed to atheists, why don't you feel it a good idea to fight

Simply because nothing good was ever achieved by fighting. Stand up to them, yes, kill, main, lie and cheat, no.

Who considers the BHA silly but refrains from telling us for fear of advancing the opposing agenda

Sorry, fallacious argument. It is based on the old 'for me or against me' principle. There are other options. Neither for nor against either for example or not being bothered what rituals either religions or humanists use as long as they don't affect me!

Cheers

DtG