Most things are artifacts of limited technology in the sense that they wouldn't exist if strictly preferred technology that made them obsolete existed. Word.

Removal and growing externally would have to be as cheap and safe for the host as abortion, not just possible. And there would have to be no overpopulation concerns from the policy of turning abortions into extra people. Or other net negative effects from it. But there could also be a positive side, like keeping the not-aborted one in its life-support chamber as it matures for experimentation or organ harvesting. Live fetusectomy could replace the usual sort outright.