Any abortion is added to the non-fertile side of the equation. Only live births count toward "fertility."
Hence this quack is throwing different terms around indescriminately.
I know quite a few couples with unexplained infertility (including secondary infertility). I'm sure had there been an abortion in these couple's pasts, the abortion would have been blamed.
It would be much clearer if he could have given definitive numbers of women scarred, maimed, etc and thus, unable to have children.