A pregnant person’s body is not an arbitrary distinction. Infanticide is murder and abortion is not because the latter has a justifying reason–the pregnant person’s refusal, for whatever reason, to keep providing their body to the fetus’s survival. Protecting children is an admirable goal but you can’t force people, the vast majority of them women, to give fetuses the use of their organs and to undergo the pain and risk of childbirth.
While I don’t think every person who opposes abortion wants to control women, it’s also disingenuous to say the desire to control women’s bodies has “nothing” to do with anti-abortion beliefs. Anti-abortion beliefs are correlated with sexism (link), and mainstream anti-abortion beliefs have a strong theme of punishing women for having sex. And yes, women can absolutely have internalized sexist beliefs.
It’s also not the best argument to compare abortion rights which protect a person’s bodily autonomy, to drug laws which regulate the public availability of substances deemed to be dangerous. A better analogy would be, if anti-abortion people believe so strongly that a right to life overrides bodily autonomy they should also be okay with compulsory organ donation, or at least blood and tissue donation.
And why the weird silence on the tens of thousands of embryos in fertility clinics being discarded, i.e. killed? Shouldn’t the biological mothers of these children be compelled to implant them in their uteruses and give birth to all of them? Or be made to donate them to anyone who offers to implant them and carry them to term? Or maybe governments could compel people with uteri to implant and give birth, if there are no volunteers. Here’s an idea: We can put people in jail for getting or attempting to get abortions (murder or attempted murder according to anti-abortion people), and then make them implant and carry unwanted embryos to term as part of their, ahem, prison labor.
If anti-abortion people find these ideas horrific, why the arbitrary distinction? Isn’t an embryo in a freezer as much a baby as one in utero?
Shouldn’t forced-birthers also be anti-masturbation? Think of all those millions of unused babies that get wasted whenever a man’s sperm doesn’t get to fertilize a woman’s egg!!! Every time a man jacks off is a mass killing! :O

You compelled me to add this gif