Ok, I get your point but not even THAT said that the earth is “blankety-blank years old.”
Oh, well, yeah -- it doesn't. I didn't say that Christ's statement ruled out Old-Earth Creationism; I respect Old-Earth Creationists, I just don't agree with them.
But, no -- while Christ's statement establishes the presence of human beings "from the beginning of creation", it does not put any absolute number on just how long a timespan we're talking about there. Point granted, freely.