Talk:FIENDship is Magic Issue 5/@comment-14512809-20150510191413/@comment-7345250-20150510192838

Considering that the changelings (A) survived being perforated by Celestia, (B) survived the fall from Canterlot, and (C) maintained the same hierarchy with Chrysalis as the queen and the armored changeling as the second-in-command for 1,000 years...

I think they're just immortal. They don't reproduce because they rarely ever lose any of their forces. The changelings of today, who are riddled with holes, are the same changelings that Princess Celestia lasered way back in the day. They never passed the trait on. They just... endured.