I imagine that other news outlets don’t agree with the allegations of this being to poison people in Gaza. If someone was trying to poison the food, uncrushed oxy pills in flour is a pretty dumb and expensive way to do it.
People are sick and dying and are desperate for painkillers.
Also, smugglers have been trying to find ways around the blockades.
Medical supply / drug smuggling happens in every war. Addicts, and people who are dying and suffering from mangled limbs, want drugs.