)
No, not nessecarily. The Ancient Rome militia took young boys away from thier families to raise them as hardened warriors. Chrysalis could have done similar. She could have declared all young changelings to be her jurisdiction, as queen, to raised under her eye as the next generation of loyal, subservient followers. Raised does not imeanply birthed, it just means raised.
Spiracle and Carapace were confirmed to be Ocellus's parents in A Horse Shoe-In, so the traditionalist changeling theory of Chrysalis being the biological mother of all changelings holds far less water than it ever used to.