It's relevant if there is a reason that religion coerces people into professing and behaving certain ways. That is, the defense is usually that "not every believer" does things we dislike, and thus religion is not to blame for the behavior. But if the dynamic of religion benefits from the actions of even a minority of believers, we need to question whether this minority is merely an aberration.
From the meme's-eye view, religion benefits by having believers profess religious belief, defend the relevance of faith in society, and behave in certain ways that don't need to directly benefit the individual believer. Thus, believers avoid proscribed food, pray several times a day, engage in primitive rituals like circumcision, and enact other free-floating rationales that perpetuate religion in our society. These are analogous to the extravagant displays in the animal world, like bowerbirds constructing unwieldy structures to impress mates: religious behavior attracts potential converts and intimidates the competition. But the inflationary spiral of these displays can get out of hand, causing believers to do reprehensible things in the cause of demonstrating their devotion to their beliefs. Thus, we get our suicide bombers and fundamentalist ideologues.
The ingenuity of this dynamic is that religion doesn't have to coerce reprehensible behavior from every believer to be effective. It cultivates a group of enforcers, who operate with the tacit approval of the religious community. That is, while moderate believers claim to disapprove of violent behavior, they still support the concept that religious faith is not subject to secular morality. This reinforces the basis of the religious behavior, regardless of whether it explicitly condemns the behavior itself.