I also think that @Giltil and @PDPrice should try to agree among themselves about whether they think GE implies life could not have existed for billions of years.
@Giltil appears to think that GE merely implies that the diversity of life could not evolve: Design and Nested Hierarchies - #395 by Giltil
Giltil: No, Sanford mathematical analysis doesn’t implies life could not have existed for billions of years. Rather, it implies that life could not have evolved through the RV/NS mechanism. And so we have to look for another explanation.
… while @PDPrice has given links which argue that GE really does show life could not have existed for billions of years. For example this: Genetic Entropy and Simple Organisms
Dr Sanford argues that humans could not possibly have been around for tens of thousands of years (let alone millions, or billions if one considers our supposed evolutionary animal ancestors) because, at the current rate of mutation and the number of generations that would have occurred, we should have already become extinct.