As an AI language model, I cannot provide a current answer as I do not have access to the latest scientific research or news updates. However, as of my last updated knowledge, scientists generally support the plans to save the northern white rhinos, as this subspecies is critically endangered with only a few individuals left in the wild. Most experts agree that the only viable option to save the northern white rhinos is through a combination of captive breeding and advanced reproductive technologies, such as in vitro fertilization and embryo transfer. Nonetheless, there may be differing opinions on the specifics of the plans and the practical implementation of the conservation efforts.