Great idea and implementation! If you are hesitant to install this for any reason, you can accomplish the same thing with this one liner:
sudo bioutil -ws -u 0; sleep 1; sudo bioutil -ws -u 1
Hook this to a lid angle below 30° trigger in https://lowtechguys.com/crank and you can easily make it run on a simple lowering of the lid
At that point, why not just disable Touch ID?
When the bad guys are too impatient to wait until you leave the computer but not fast enough to stop you before 30 degrees while keeping the convenience of life.