They would have harmed all of the animals and insects living within the forest,
and they would be brutally breaking their promise from before by making the deaths of the people who sacrificed their lives for the trees and animals look meaningless, and the king would be breaking his promise to the people by falsely telling them fake information
There are many words to describe the condition asked in the question. Some of the words used to describe "to pay close attention to details and ask questions." are meticulous, punctilious, and scrupulous. Thoroughness. is also used for detailed study.
