What a joke. Google, Facebook and Microsoft have face wearables in the market already. In Google's case, they've had enough time to do a full, release and kill cycle. And the Quest runs Android.
Apples watch is a mainstream consumer electronics hit. The closest other thing close to comparable I can think of is the fitbits - at least their simple ones. Nobody in AR (or face wearables) is playing in that space at all.
I think "decade lead" is unsupportable. But the article is right that all of their competitors or potential competitors are well behind in some combination of capability in hardware, software, manufacturing, ecosystem. Most of them in all categories.
I'm not sure what argument you are trying to make. That in some putative future where AR headsets become a meaningful product category for wearable Apple might not be in a strong position?
Because they have a wearable that people (and not just people in a niche) use and buy in significant numbers?