This is a strong accusation, but it has the evidence behind it. The most recent of which is a report published at the UN Human Rights Council[1], but also the case filed at the World Court by South Africa in December with addenda added in March[2]. The evidence for this claim is both public, overwhelming, and has been filed at the world’s highest court.
All that said, I actually didn’t make the claim here—though I have elsewhere—I merely said we should be open to the possibility that this is the case.
1: https://www.ohchr.org/sites/default/files/documents/hrbodies...
2: https://en.wikipedia.org/wiki/South_Africa_v._Israel_(Genoci...
But more than anything, I can just look at the conflict itself and there's no genocide going on. It's war in a dense urban area where Hamas hides among the population.
What we may be witnessing is the first information age level genocide, where the killing is done at the behest of a statistical function with near infinite computing power.