I worded that badly. What I meant was that the reason humans have prejudice-y thinking hardwired in the brain is for self-protection. If individuals of some ape species have a 30 % chance of being super aggressive and trying to kill you on the spot, your first reaction to seeing one will be negative and retiring – even if this specific one is super nice and wouldn’t hurt a soul.
The post clearly addresses this problem. This discussion is not about the genetic risks of having children (which should be prevented according to OP), rather only about the relationship.