Is a fetus less human for being in the womb, than out of it?
Depends on how you define a human.
You could argue No if you define a human as a being that has its own human DNA, which occurs at fertilization. You could then say that the different types of humans such as fetuses, babies, kids, and adults etc. are all merely different "stages" of humanhood, while still being human nonetheless.
You could say Yes if you define a human as precisely being someone that has been born, whereas a human in the womb is not really a human, but merely a human in the process of being made.