The weird thing about letters (which is true of phonemes, too) is that while those earlier exemplars of the first character in the alphabet were blatantly of a shape that would be a categorially central, canonical-looking roman L, I don't feel in my gut that it is (exactly the same thing as) an L. The upside-down-tee shape in this version feels just as much a member of the class of "shapes that are this letterform" as the L-shapes do to me.