This angle of attack on Christianity is not a credible or plausible argument because EVERY human, individual or group, whether secular or religious, can be thus accused and thereby their beliefs summarily dismissed - and that generally on the basis of hypocrisy - which is the fundamental flaw in any such whatboutism argument, because such logic is demonstrably fallacious and hypocritical itself.
Just because so-and-so, a professed believer in, or adherent to [whatever] invokes their god, or God, or idol, or leader, or whatever as justification for destroying their enemies does not mean their god, or God, or idol, or leader, or whatever told, taught, or otherwise made them do it. The kernel of fallacy there is always the link between what something teaches and how someone interprets such teaching - and often why.
For whatever reasons, non-Christians have always loved to make this argument, thinking it gains them unassailable points in a debate. But, it doesn't; it's simply based on a fallacy.