For instance during the “dark ages” we saw construction technique leap forward (think cathedrals like Paris’ one), accounting techniques saw the shift to double entry book-keeping, and so many deeply impacting innovations that didn’t cone from monks while they were supposed to have such knowledge and education.
You mention classical books reproduction which was a important occupation for monks, yet the printing revolution came from a completely different direction. Not rocking the boat was a principle they adhered to that basically tied their hand.
We also use the word curiosity slightly differently - the older form is found in "curiosity killed the cat". The ancient philosophy term that would be closer to what we may mean by curiosity now is wonder.
I think you leaped to a conclusion here. Parent post is about immoderate distraction, not having horse blinders on 24/7. There is plenty of room to “look at the birds” while also knowing how to say “no” to distraction.
It kinda made me wonder why I felt so uncomfortable reading it, and I think it's the very deep religious philosophy that shines from it.
Curiosity is fundamentally a desire to discover things by one-self and uncover hidden things. It goes against authoritative advice ("kills the cat") and is self motivated. It is basically the opposite of blindless trust, faith. A vice.
Studiousness was the core virtue of monks, and they were the spearhead of shuting down distractions to focus on a single goal.
This is basically the advice we'd give to people to stop looking at the birds, to focus on plowing the field in front of them.