Well, why would anyone bother being an Old Earth Creationist? The
only reason for being a creationist is to defend the literal truth of the Bible. Anyone who's prepared to admit that the Genesis story isn't literally true might as well go the whole hog and admit the fact of common descent as well.
It would take a fairly special mentality to admit that Biblical chronology is a load of rubbish and then to insist that the story with the talking snake is still totally true.
Edited by Dr Adequate, : No reason given.