The reason that “blame evolution” isn’t a good answer isn’t that evolution specifically is incompatible with Christianity. The reason is that “blame anything” isn’t a good answer, whether it’s evolution or something else. God is supposed to be in complete control over the universe. The argument “God only let it happen because of X” is nonsense no matter what X is, because God can do anything he wants; he’s not subject to constraints.
The reason that “blame evolution” isn’t a good answer isn’t that evolution specifically is incompatible with Christianity. The reason is that “blame anything” isn’t a good answer, whether it’s evolution or something else. God is supposed to be in complete control over the universe. The argument “God only let it happen because of X” is nonsense no matter what X is, because God can do anything he wants; he’s not subject to constraints.