I think this advice assumes a lot about the reader. I find that quite a fraction of people rather think too little, often sold on some distorted misconception of "agile".

I guess there is an art of thinking through things at a reasonable amount, knowing when to move forward, and when to stop again and think more.

Sure, learning this art surely has to be done to a large part by experience, so the points in the article has their merits, but things, people and circumstances are not always the same.