If your team is half decent, they already know where your skills truly are, and they're comfortable with it. And before you know it, you'll be the senior engineer.
This is a bad title to an other unsurprising article.
Managers don't fear they will become irrelevant. It's bad managers who are having trouble figuring out how to manage without seeing people at their desk.
What's mind blowing to me is that despite two years of being forced to evaluate people by their impact rather than by their physical presence, so many managers still don't have a clue how to do this right.
Meanwhile, healthy remote teams are thriving, and competent middle managers there provide incredible value, from managing execution to keeping the social tissue of their teams together.