The Bible was not written as a scientific document and should not be used as one. Nowhere is the Bible is the age of the earth discussed or an age given. It has been deduced from the genesis record. I know what the genealogical records but I will wait until our Heavenly Father tells me directly how old the earth is/was/will be. Actually, I probably won’t care by that time.
Indeed, it does. The geneology is extremely important (as patriarchal lines always are). The Kinsman Redeemer necessarily must be related directly to Adam in order to be able to save all/any. The genealogy is that proof.
And the greater heresy in old earth theory: Death came into the world when Adam sinned. According to evolutionary theory, death was necessarily here long before Adam.