That's nothing but peak genocide denial rhetoric. There are Neo-Nazis who use the exact same rhetoric as you to deny the holocaust. How would it be "career suicide" for Amos Goldberg to argue against it being a Genocide as long as he provides credible arguments? It only would be "career suicide" because anyone with half a brain can see that it's a Genocide. Anyone who is not a Zionist and has just seen a fraction of the mountains of evidence can conclude without a doubt that it's a Genocide. One has to be completely delusional to deny it.
Amnesty International investigation concludes Israel is committing genocide against Palestinians in Gaza: https://www.amnesty.org/en/latest/news/2024/12/amnesty-inter...
Press releases UN body, UN Special Committee finds Israel’s warfare methods in Gaza consistent with genocide, including use of starvation as weapon of war: https://www.ohchr.org/en/press-releases/2024/11/un-special-c...