The point was both people on life support and embryos in the womb require life support. One is accepted by all as a person even though they are supported in life not of their own body. The other isn’t universally accepted as a person. I’m not comparing an embryo to all human life. The embryo is capable of thought, sensory experience and the other multitude of other functions an attributes. But maybe just not for 9 months. The person on life support might have that very same experience or it might even take longer. That’s my point. Both potentially have the same attributes, abilities, functions, etc. and both are being sustained not of themselves.