Paleo-Hebrew is a real script. But one of the problems is that Paleo-Hebrew comes from Kabbalah. It’s also very confusing to some readers. Additionally, it dates from a time so early, that even Moses never heard of it. The Bible was never penned in anything like Paleo-Hebrew. There is some evidence that the tetragrammaton (YHVH) may have been preserved in its paleo form for some time, but that is merely decorative, and not substantive to interpretation. It is an issue in the Hebrew Roots camp only because some have become so enamored with the script that they miss the actual meaning of the texts they are reading.