My friend, Imma be kind, and merely say that CRISPR actually works to achieve genetic changes in organisms that attain the intended results. It's not that genetics is a completely explored field. You can't just learn it by rote. The vast majority of the uses to which genetics can be put are yet to be understood. You are right that it's presently like using an axe to do fine detail work.

That doesn't mean it doesn't work. I have done cabinetry with a chainsaw. Sometimes all you need is crude understanding to achieve what you set out to do.

However, until the use of an axe is grasped better tools aren't possible - because the limitations of the axe aren't known, and what might be more desirable for specific purposes can't be conceived. The fact is that bioengineering is going to become the most transformative industry the world has ever known. It will affect you personally, if it already hasn't (protip: it has).

Just because understanding isn't complete doesn't mean it isn't valid.