I guess that fits in here? Especially that first sentence...
The Pro-Life position is a very libertarian thing. How can you say denying abortion is an anti-libertarian belief? Life is the greatest right we all have and the taking of the life of the "most innocent" among us is a great injustice. Theocratic revanchist I am not. The non-aggression axiom most definitely applies.
While you may think it wrong to believe that life begins at conception, for those who hold that belief, libertarianism would logically lead to being against abortion at any stage of development. While I don't have that particular belief, I don't think it is absurd, so I can't see where that post belongs here.
Still, it is widely known that pro-life positions are not particularly what one would consider as "libertarian", rather have libertarians been associated with the complete opposite of pro-life positions.
As such, yes, I find it absurd that one would make that claim.