The bible compares people to sheep when they are in trouble, lost, confused, vulnerable, and weak.
It never compares people to sheep when they are just being people.
It only compare people to sheep when people need help.
Nevertheless, it's now come to be used to KEEP people weak, controllable, manageable, usable, and stupid.
It's mostly used to prove that people can't and therefore shouldn't think for themselves.
It's full of sheep!