You’re making a choice to see fetal tissue as a baby or an unborn child - something that is not in any way inherently true.

Since there are opposing strongly held viewpoints on abortion and neither can be proven to be more correct than the other - neutral language seems like the best way forward.

You can claim the language is biased, but as a medical procedure it’s coded in all the same language as any other medical procedure - which seems to me to be the neutral thing to do. How you feel about the emotional or moral content of a medical procedure is separate from what is done.

To take a less emotional example - I think genetically modified organisms are basically a bad thing, but that doesn’t make the term wrong - calling them monsterplants would make me happy but it’s not more accurate and it linguistically enforces a viewpoint that is not “correct” just because i happen to hold it (for many nuanced reasons i won’t go into here)