I don't begrudge anyone management practices that work for them, but this doesn't seem like a complete analysis.

> I can’t even imagine a task or question that can’t be discussed over text.

Can't is a strong word. I can easily imagine, and the author earlier in the article did imagine, cases where someone does not want to discuss an issue over text. Issues like:

* I have broad concerns about the direction of the company and I'm not quite sure how to frame them.

* Coworker X keeps not doing the things that he's promised to do, to the point that I'm beginning to consider him untrustworthy.

* I need you to pay me more money, and I'm not explicitly threatening to quit yet, but I'd like to create some informal common knowledge that I could have a higher paying job next month if I wanted.

If you have a stable team where everyone's well-aligned on the roadmap, no personnel issues ever arise, and nobody's slacking? Sure, no calls can work. But without the calls you may not notice when those stop being true.