I never said (or insinuated) the cheetah was doomed. They're breeding well in captivity, especially in open range zoos and their is a large captive population. I was using them as an example of a species that has health issues attributed to a lack of genetic divesity, at least in captivity.
You kinda did, to be fair:
Such a small founder population really can't be considered viable long term with genetic bottlenecks cuasing issues down the line, as seen in African Cheetah.
By stating that a population which has undergone genetic bottlenecks "really can't be considered viable long term" and citing cheetah as an example, to be precise.