Why did anti-Israelis simply dismiss Richard Kemp's testimony to the UN on the Gaza War?

Mr Kemp is obviously a complete Idiot . In just 23 days the IDF managed to kill 1400 civilians including 340 babies and young children . Does that sound as if they were trying to safeguard civilians. ? Is he right and the UN, Red Cross, HRW and amnesty all wrong. I watched live TV where Israel were carpet bombing Gaza with high explosive and phosphorus bombs . Does that sound as if they were trying to safeguard civilians ? Their so called professional air force can't even see the difference between an Egyptian flag and an American on the USS Liberty in broad daylight so how can they be expected to see the difference between an legitimate target and UN compounds and schools when there were even given the co ordinates. and yet still continued to bomb both ? The IDF are a complete shambles.