There's a reason PMs are reviled to mildly tolerated by engineers: they believe the map is the end product, not the territory.
The correct answer to which is more important is "It depends."
There are many businesses where shipping 20% later leads to ceding first mover advantage and losing the game. Largely what's being discussed in the article.
More detailed and accurate project tracking and projection doesn't deliver quicker shipping. Effectively prioritizing outstanding work does.
There's a reason PMs are reviled to mildly tolerated by engineers: they believe the map is the end product, not the territory.
The correct answer to which is more important is "It depends."
There are many businesses where shipping 20% later leads to ceding first mover advantage and losing the game. Largely what's being discussed in the article.
More detailed and accurate project tracking and projection doesn't deliver quicker shipping. Effectively prioritizing outstanding work does.
They're similar but definitely not the same.