Earlier quoted context omitted.
> how else would Gazans eat? UNRWA, WFP, etc. You know, the ones with decades of experience in Gaza and other war zones with sites, warehouses, and all the other infrastructure necessary to support a population under siege.
> UNRWA The one that has a unique definiton of 'refugee' that doesn't correspond with UNs the normal definition of the term? Where many of the staff work for Hamas? Where their schools teach children to be martyrs? The one many countries have halted funding for because of this? If you want the UN, fine, UNHCR, the normal UN refugee agency.
Israel is arguably the last colonial state to be founded, at a time when colonialism was on the way out. The Israelis expelled a massive number of people into the surrounding countries, and have since refused to allow the Palestinians to return to their homes, which are inside what is now Israel. The Palestinians naturally want to return home, and the neighboring countries do not want to provide for millions of refugees created by Israel, so the Palestinians are in permanent limbo.
The obvious solution would be for Israel to allow the Palestinians to return home, and to pay for their resettlement. But Israel refuses to do that, because the entire idea behind Israel is that the country must have a decisive Jewish majority.
As for your various accusations against UNRWA, they're just a rehash of the standard Israeli propaganda against the agency. The actual reason why Israel dislikes UNRWA is because the existence of Palestinian refugees is a problem for Israel.