You realize that there's a difference between relying on a caretaker to survive and relying on a physical connection to someone else's body to survive, and the two should not be conflated like this, right?

You imply a distinction that doesn't exist in biology nor ethically. A newborn relies on the mother's body for years to eat, regulate temperature, and sleep. If the offspringis parasitic for utilizing the body for survival, the newborn is equally paasitic. If the mother has an absolute right to eject the fetus, she has an absolute right to eject the newborn. The fact that we do not treat newborns this way proves that bodily autonomy is a privilge not an absolute right, and it does not override the right to life of a dependent human.