Coming from Savulescu this is no surprise. He's a eugenicist who is more known for writing outlandish things like it's "morally required that we employ cloning to produce embryos or fetuses for the sake of providing cells, tissues or even organs for therapy" than for producing anything that resembles a persuasive or thoughtful argument.
Unfortunately, thinking up new ways to argue in favor of killing certain humans gets you a professorship at the University of Oxford.
In the comments sections, a commenter named LiberalDemocratProgressive writes:
Savulescu is correct, our society gets overly hysterical and can't handle intellectual discussion on moral ethics. I long for a society where you could freely and calmly discuss genocide. Like, say, Germany 1933.