Yeah, I looked at the article expecting to find out about some writing system I hadn't previously known. Oh, it's Ajami? That's hardly news, it's been widely known (at least among people with an interest in such things) for a long time. E.g. the https://en.wikipedia.org/wiki/Ajami_script page is far from new.

It may well be that they're now unearthing (or paying attention to) specific Ajami documents that have been largely ignored. But the writing system itself isn't that obscure.