You must have a very strange definition of Christian fundamentalism, because the people I would describe as fundamentalists are absolutely a threat. You also seem to think that people don’t use Bible passages to justify basically anything while still claiming only their interpretation is valid. These people think of themselves as having the actual, literal interpretation of the Bible.
What pisses me off the most is that fascist Christians are the biggest threat to me personally. They’re the people calling for people like me to be eradicated from public life or straight up killed. I’m not over here arguing that we should do the same thing to Christians that you endorse against Muslims.
Even if the Bible had no passages encouraging fucked up behavior, the existence of Christian fascists shows that the content of the religious text does not prevent a religion from fueling fascism.