How exactly could these commands to use MacBook in Clamshell Mode without a Power Adapter be dangerous? And how to revert them eventually?

I am trying use my macbook with an external device in Clamshell Mode without the power adapter. Hence, I am following this tutorial . The author gives, first, a GUI approach. Then, he suggests the following commands on terminal:

pmset -g | grep hibernatemode

sudo pmset -a sleep 0
sudo pmset -a hibernatemode 0
sudo pmset -a disablesleep 1

sudo pmset -a sleep 1
sudo pmset -a hibernatemode 
sudo pmset -a disablesleep 0

The point that intrigues me the most is that before giving the instructions, he says: > Note: I have not tested these commands because Apple recommends not changing the hibernatemode using the pmset command, and these commands do just that. However, these commands will disable your laptop’s sleep on lid-close trigger, so they should also solve the problem of being unable to use your laptop in clamshell mode without the power adapter. That said, use them at your own risk. Hence, my doubts are: 1. Why does Apple not recommend tweaking hibernate-mode with the pmset command? 2. What could go wrong? Why is it dangerous? 3. If something bad happens, is it possible to revert the problem? And how to do it?