” what “bias” would make someone call it the other way, to make kissing a murderer (done to hopefully save Jewish lives) to be far worse than idolatry and heresy?”
The kind of bias that doesn’t equate Zionism to full blown idolatry in the literal sense. I.e. the opinion of seemingly every poster in the Coffee Room other than you. It’s just a halachic difference, I don’t mean any disrespect. If someone held me at gun point and asked me to bow down to an idol, I would take a bullet as the halachah requires. If someone held me at gun point and asked me to say the prayer for the state of Israel, I would reluctantly do so against my will. I assume you would take the bullet in both situations since you consider Zionism to be idolatry?
I have to ask, just out of curiosity, do you consider the extreme dati leumim who borderline worship Ben Gurion and company to be worse or the same as the secular Zionists who attach no religious significance to their beliefs?