That point is already adressed in the article, he says:

"Hard AR is tremendously compelling, and will someday be the end state and apex of AR.

But it’s not going to happen any time soon."

Then later:

"Of course, there could be a technological breakthrough that solves this problem [...] In fact, I actually expect that to happen at some point[...] But so far nothing of the sort has surfaced in the AR industry or literature[...]"