This article, along with a boatload of companies, fundamentally misunderstands the way that senior / principal / staff engineers add value.
The article mentions it briefly in the small part about “force multiplier” but then seemingly reverses course when talking about “soft” duties & especially emotional labor.
The value of staff engineers is to give them autonomy in deciding how to be a force multiplier. If they realize for themselves that this can be accomplished with some soft skill application, so be it. If they realize this will happen if they do not delegate some critical task and instead clear the calendar so they can write the code that time, that is good too. And lots in between.
But autonomy is the critical thing. These are engineers that you’ve decided to trust greatly, so you cannot get in their way with compulsory person management overhead, adding them to every product meeting, burdening them to “sell” their vision on some architecture, recruiting policy, whatever.
These are the very people who you should be getting out of the way of, letting them decide how to be a force multiplier.