I'd actually been thinking about this question. I think what I'd say is that you, by chance or by design, struck that balance between the letters all looking the same vs letters of radically different shapes on one axis, along with the script appearing to form an organic whole vs a script that appears to be a pastiche. In other words, you made a script that not only looks plausible, but is also convincingly realistic!
Aesthetically, I particularly like the elegant simplicity of the letter forms and the rounded angles (which I imagine could in world be a matter of font design rather than actual letter evolution). You've got some ascenders, some descenders, some bits that stick out to left & right, which avoids boxiness (even though, to be frank, most of the letters áre in fact boxes!).
All that shows not only skill but artistry!