Also, the sentence about how they’ve “tuned the RI of the acrylic to match the glass” is carrying a lot of weight. If the refractive indices differ by even a tiny amount, the result will be turbid or even milky, and I suspect that is very hard to control in a bulk manufacturing process (let alone after a couple years of real-world temperature and humidity changes).
What they’re describing is basically transparent fiberglass, and there could be applications for that, but probably not high-performance optical elements like lenses or phone screens. The glass in phone screens is already amazingly strong, considering how ridiculously thin it is.
