I wasn't aware that such populations existed, can I have a citation for that?
So digging around more, it seems that "feral camel" is a term applied almost exclusively to the Australian population, whereas animals in West Asia and Africa are simply referred to as "domestic camel". I find this to be a pretty pointless semantic distinction. I will admit, it seems there are far fewer feral populations in this region than I expected, but they are there. Additionally, there are large populations of what are referred to as "free-roaming" camels. Herds of camels that live freely and roam freely but are somewhat managed and relied on by locals and nomads. I don't see there being any meaningful difference ecologically between these "free-roaming" camels and feral camels honestly.
~Thylo