Let's overlook the obvious problem with this statement (you are turning down God's offer of forgiveness and eternal life in Heaven - because some people who claim they will be in Heaven are jerks).
First, I must say, if a local church is full of hypocrites, you should avoid that church.
- They say they are evil, but are actually good. I don't think anyone would have a problem with this. It'd be like super-humility.
- They say they are good, but are actually evil.
Ok. But what about atheists who are hypocrites?
Atheists cannot believe in anything greater than themselves. That is because everything dies with us (entropy). There can't be anything greater than ourselves, as individuals. At most, they can sponsor some sort of utilitarianism, which sees to the maximization of utility (although that has some problems).
So, any atheist who argues in favor of their belief system over any other - "because it is true" - is a hypocrite. Truth doesn't matter (under their system). Only our own purposes - which means theists can have their own purposes, and atheists shouldn't try to dissuade them.