If people rotate then what are the odds of Chakotay getting to the sleeping beauties without anybody intercepting him? Emerge as little larva from the wombs of the middle-aged ones and then the larva would grow to the size of old adults? Ok, but they are obviously mammalians in nature and that's not how mammals reproduce, for one thing, why would they have breasts in that scenario? The virus feeding on light to increase in size is completely implausible. The equation E=MC2 tells us that it takes an incredible amount of light for an increase of mass of only one kilogram, more than enough light to vaporize Voyager in a micro-second.