Writing problem: how to handle the Bo'di-boilers in my setting? I don't want it to be reasonable to discriminate against them

So, in my setting there is this one group called the Bo'di-boilers, who have mastered the act of bo'di-boiling, the act of improving one's body by subjecting it to various intense activities, effectively breaking down their own bodies and building them up stronger. That's where their name comes from; bo'di is their word for "body", and boiler is their word for "builder"

However, one person pointed out that this means this group is effectively superior to everyone else; they physically enhance themselves through bo'di-boiling, hence they are many times stronger than a normal human. Wouldn't it therefore be completely reasonable to do a racism against them? Their advanced strength means they can easily overpower the average person after all, which inherently makes them a threat even if they don't do any violence.

I don't want to create a setting where discrimination is justifiable, but at the same time, who would wanna live in a neighborhood where one person is much stronger than everyone else? If I got attacked by a random person, I would stand a reasonable chance at surviving, but a bo'di-boiler? No chance.

How do I avoid making racism completely justifiable in a setting where everyone isn't exactly like me?