It raises another question: how long do ponies live in Equestria? Real horses reach full adult development by age five, but can this make sense in MLP world?And if the lifespan of changelings is shorter, shouldn't they be consider legal before the age for ponies?In the first comic, if we say changelings's lifespan is shorter as they are bugs, we can assume Thorax is legal for a changeling (as he is a leader), but he would be too young if he was a pony. So the gag is more about cultural bias, it's hard for Coco to assume she's dating someone that young, even if he's legal from a changeling point of view.For the second comic, if only the Queen can perpetuate the species, then we can assume there have been no new newborn changeling since Chrysalis departure but some have died from old age or left for various reasons.However, I assume these new changelings can probably reproduce. In the orginal script of this strip, the changeling said the law has to be reformed because it's still written that the Queen is the only one allowed to perpetuate the species. But it took too much space so I didn't keep it.Or maybe they can reproduce, but they didn't notice it yet... The mating season will be full of surprises this year!