Bullying is enabled by a power imbalance. For those without the ability to rectify the power imbalance, teaching resilience both helps in the short-term
and is a useful skill for the large fraction of the population who will one day end up in a job where there is a n abuse of a power imbalance, but they can't quit if they also want to eat.
As the parent of both a bully and a victim (two different kids), I can say that correcting the bullying behavior is not as easy as it might seem. Many (most?) bullies are charming and manipulative and most victims are not, so convincing those who have the ability to correct the power imbalance is quite challenging.
I could make a laundry list of examples just from my own direct experience, but I'll limit it to one:
(Pre COVID, as it does involve tech in the class room, which changed a lot in 2020).
We refused the school-issued Chromebook for my daughter and the administration agreed that she could do all of her work on paper. One of her teachers "didn't feel right singling her out" and "she is such a good kid" so without telling us gave our daughter the classroom Chromebook to do in-class assignments, which she used to cyber-bully a classmate to the point that the child left the school and the child's parents, who were previously friends with my wife, will no longer talk to us.