How is young-earth creationism theologically harmful, according to those who do not adhere to it?

According to Young Earth Creationists, other beliefs (particularly in Evolutionism) harm Christianity in various ways such as: - Making Death something other than the direct consequence of Sin - Distorting the redemptive role of Death¹ - Denying the special value of man as distinct from all other creatures - Reducing God's power I don't want to belabor the point, as I'm merely trying to show the existence of claims that a denial of YEC is detrimental to Christian theology. I also don't want to get into debates of whether belief in, or rejection of, YEC is beneficial or harmful to one's ability to *remain* in the faith. For this question, I am placing that explicitly out of bounds. (Likewise for arguments dealing with science, whether or not a belief is scientifically supported or affects one's view of science.) Rather, given the above YEC arguments, it would seem that a case can be made that any attack on YEC is an attack on Christianity itself, and that all such attacks are thus ultimately opposed to Christianity. Indeed, such arguments *have* been made by various YECs. Now... if such arguments can be sustained, they would be a powerful argument in favor of YEC. Therefore, I would like to explore the opposite side. According to non-YECs, **what are the theological detriments to belief in YEC?** ---- (¹ Death is the wages/consequence of Sin. Adam sinned ⇒ God killed an animal. God's people sinned ⇒ they sacrificed animals. Humans sinned ⇒ God sacrificed His Son. YECs argue that death before sin distorts this relation and reduces the atoning "value" of death. [This answer](/a/41819/53502) on another question may be helpful.)