You know how many atheists (including this one) are fond of taking something a Christian (or Muslim) said and using it as an example of what some Christians (or Muslims) believe? As long as we're careful to limit ourselves to making statements about what some Christians or some Muslims believe and do not attempt to use it to characterize what all Christians or all Muslims believe, this is probably okay. We don't want to unfairly overgeneralize, at least not if we want to maintain any pretense of being rational and avoiding bigotry.
What I'd like to point out in this brief post is that Christians, Muslims, and other religious believers do this too. In fact, they do it with comments atheists make online. To the degree that we are worried about this, it might be a good idea for us to think before we post our thoughts in public online forums.
To be clear, I'm not calling for some sort of self-censorship; I'm suggesting some awareness that this sort of thing happens. Religious believers do sometimes read what we write online and do sometimes use our statements as a way of showing what at least some atheists believe. If we are bothered by this, we might give a bit more thought to what we write than we sometimes do.