Why is "Abandoner" being used on this board?

I feel like I missed a memo recently. There have been a couple questions that have referred to biomoms as bioabandoners or just abanoners. When I was reading the question I thought "OMG, this asker is going to have their bottom handed to them for that term" -but the term was ignored. I thought the general consensus here was that biomoms are victims, no? People get lynched here for using birthmother, but bioabandoner is acceptable? My head is spinning, I need an explanation...