A better analogy for the "finishing mindset" would be that every running process takes RAM, and you can only have so much of it. This highlights the fact that finishing a task has a value regardless of the value of the task, because it frees resources that can be used for something else.
I think trying to stretch the analogy too much is detrimental to the whole article. For example the reminders: a post it on my screen will remind me at all time that I should do something, because the "default mode" of the post it is existing. The default mode of the digital is not existing. I need to boot my computer to have my to-do list app, or consult my phone, or open my notebook. This is not the case with a physical reminder (sure the notebook is physical, but it needs an action to remind you of something).
I think the physical is actually what's missing in this article.
Mise-en-place is also that you have your tools organized in front of you, having physical reminders and notes, can be helpful for the knowledge worker as well. Having "your" workspace in the office, or at home as well. I find that a huge issue with flexible workstations.
I think trying to stretch the analogy too much is detrimental to the whole article. For example the reminders: a post it on my screen will remind me at all time that I should do something, because the "default mode" of the post it is existing. The default mode of the digital is not existing. I need to boot my computer to have my to-do list app, or consult my phone, or open my notebook. This is not the case with a physical reminder (sure the notebook is physical, but it needs an action to remind you of something).