Almost, but not quite. Making the pill itself is still a form of assistance.

The nearer analogy would be if someone published a recipe and instructions for making the pill.

I think that would still be "assistance," but much more likely to be covered under free speech laws, that disseminating information about something (publishing instructions) is generally already protected.

Even then, though, were such publication to be banned, it would still be the case that nobody is being "forced to remain pregnant."