Teaching kids to "withstand" bullying doesn't really prepare them for life after school. In the adult world, it's a crime for someone to attack you physically, or stalk you, or threaten you, or harass you. Today, would you "withstand" having a coworker or a neighbor "wait for you at a certain point every single day for several years"? I rather doubt it.
I disagree with your characterization. I don’t think sticking up for yourself is a perfect solution, but I know two things:
First, you CANNOT remove bullying. It can’t be punished out or legislated out of kids or people. That is a liberal construct.
Second, running to someone else for help every time something happens is not how you want to go through life.
If you do that, you will be a doormat every single stage you enter in life, personal and professional, and people will have disdain for you. That is a fact. there is great value, even at the risk of physical violence, to teaching someone to stand up for themselves. It teaches self-reliance. Seriously, I am not, and nobody I know would advocate not telling the authorities if you were assaulted physically or verbally as an adult, every serious person knows that isn’t what we are talking about. But as an kid, getting a bloody nose or your tooth knocked out is not, in my opinion, too high a price to be paid for learning how to stand up for a bully, because as you transition to a point where bullying becomes less physical and more mental, the concept is the same: not combating it invites more of it.
Had that happen at work (not me, but others).
It happens. You learn to adjust. As an adult, you have more options to avoid.
Or, like me, you move next to a bunch of red neck goofballs like yourself and realize that while I may be an engineer, I still love to hunt, fish, garden, and drink. Finding your own place helps.