I highly doubt that. There is no precedent for people being kept around by their rulers, without getting some (real) use out of them. We'be been engineered into existing or not existing with various policies, one child, no abortion etc. We're manufactured as needed, and we mostly exist on a need basis. This isn't a comfy perspective and people tend to not want to see it this way, but that doesn't change it for what it is.
I personally highly doubt we'll all be kept around without people in power getting some real use/benefit out of us as a whole. Way simpler to "accidentally" wipe a good bit of what in their view would then be "useless eaters".
I wish more people would go beyond the "how it looks" and "negative perspective" and think at the actual risk. Especially with no historical precedent for what they are hoping for.