yep

Believers in any precomposed set of doctrines and unrealistic promises are easily manipulated alright. Those believers would include, with or without gods, faithful subscribers to political parties, political ideologies and the various 'news' media and 'experts' employed to propagate their holy writ.

That is a very good start for your OP but needs to be expanded to know what your is point.

Pretty much.

I disagree. I've met free thinkers that believe all kinds of weird things.
I'll go a step further and say that I believe that if one thinks they are the "rational" one, they are more likely to fall for confirmation bias and the other host if mental trips our mind does to pat ourself on the back.
If we were devoid of bias, then there wouldn't be infighting among atheist as to whether feminism is a good thing or not.