They’re not being bullied for their behavior, they are being bullied for their existence (unless you’re suggesting one support the bulling behavior). In our current environment there is no shortage of people reinforcing and welcoming the bullying behavior and decrying the existence of the bullied. If it was an issue of unfamiliarity you would have a point but that’s not the environment that exists and I’d prefer to make the bullied feel welcomed than the oppressor with what limited time and resources I have.

We all have choices to make, you seem to have chosen to make the oppressors and bullies feel more welcome with your time.

(Also, your link says that people who are ostracized by others tend to continue that cycle not that people who ostracized others were themselves victims of ostracization in the past. That’s swapping cause-and-effect, and doesn’t support your contention)