Seems to me a large part of growing up is keeping up with the herd. Like a pack of zebras in the savannah. If you stray too far behind or show weakness, you get picked off by the roving lions.

Now I can see utility in behavior divergent from the norm being encouraged. But at the same time, peer pressure to keep moving and keeping pace is a great motivator for growth.

So, I would say the issue needs to be studied with greater depth than it sucks for the guy being bullied. What is the greater effect on the entire population? If you ensure no one gets bullied there is a non zero possibility that it results in a negative effect for the entire population in the long run.