Any convo about #equity is about the distribution of benefits and harms, which is always followed by moral arguments supporting the current distribution. Or whatsaboutism intended to direct attention away from the grotesque inequity of the distribution of benefits and harms.
People don't like to accept their privilege, or that privilege was a necessary ingredient (along with luck and hard work) in present success. Primarily ego, but they also dislike what their moral intuitions tell them about the implications.
If we benefit from another's harm, culpability follows. The debate should be about degrees of culpability (based on knowledge and agency) rather than its existence.