Israel isn't to blame for Egypt not welcoming Palestinians in. Actually, Palestinians are subject to a kind of Arab apartheid (which is why I always scoff at some of the Amnesty rhetoric).
They are friendly in some ways and not in others. As people say, Hamas are a risk to citizens. In 1978 there was the assassination of Egyptian Culture Minister Youssef el-Sebai, allegedly by Palestinian extremists. Rights were removed after that of citizenship. I think Palestinians are legally denied citizenship in a lot of places. Denied rights like owning businesses etc. I think (not an expert on this) they have been mass expelled from numerous places (at least half a million from Kuwait at one point). So it's not as friendly as you'd assume.
I feel terrible for the Gazans, but it's been a mess. There is a lot of fighting and bombing, and much of the energy and of course the huge amount of aid delivered to Gaza goes into efforts to destroy Israel rather than look after people, but it wasn’t supposed to happen that way.
In 2005 when Israel forcibly removed around 7,000 Israeli citizens from Gaza in order to establish an autonomous “Juden Frei” Palestinian enclave that was to be ultimately connected to the West Bank. The Israelis who had lived there had established a really awesome greenhouse industry for food production and exports, and had built great housing, schools and hospitals which were left almost entirely intact when they were dragged unwillingly back to Israel.
The plan for Gaza was to create was to create a prosperous, free trading zone in the middle east that had a lot of awesome infrastructure. There were plans for a duty free cruise port, an international airport and seaside resorts that would have rivaled any in the Middle East. Fair and democratic elections were scheduled for a few months following the Israeli withdrawal.
But it went to shit.
Almost immediately after withdrawal, Hamas fired up mobs to ransack the abandoned Israeli settlements, smashing the greenhouses, burning the homes and desecrating the synagogues. At the same time they started firing rockets into Israel which were homemade and did little damage but definitely started things off on a bad foot.
Hamas defeated the PA in the election, and have basically not held an election ever again since. So they kind of showed up, fucked everything royally up and then refused to hold more elections so they could be removed. So there's now no democracy in Gaza.
From the outset Hamas has made clear that it has only one goal - the total elimination of Israel and the vast majority of its Jewish inhabitants. To that end it has used humanitarian aid and everything at their disposal to work towards that. So for example they were given concrete to rebuild homes but then instead used it to build tunnels under Israeli and Egyptian territory for nefarious purposes and to make bunkers for rockets!
Money that was supposed to go to hospitals, schools and housing for the masses has instead gone to the Hamas elite and any google of Gaza city will show these luxurious shopping malls, hotels and homes partially hidden in among the horrid slums where the majority of people live.
This is all why I get so damn annoyed at the idea Israel is to blame for the Gazans being so destitute. Hamas destroyed the shit out of everything, used all the aid money to live in luxury or act to destroy Israel and they have put them Gazans in this position.
It's only because of the UN and other aid agencies that there are ANY schools, medical facilities or even basic necessities for the masses because what monies Hamas doesn’t siphon off to build there and smuggle weapons they use to enrich the leaders and it's even believed it is sent to safe havens abroad!
Meanwhile, they seem to have convinced large portions of the British left that Israel is the bad guy here and they run around glorifying suicide bombers, paying people salaries and bonuses for murder and chanting antisemitic bollocks while they give toddlers guns.
So life is pretty bad for the Gazans, but I am not convinced Egypt as a government are not able to see what's really going on and that offering "Asylum" is sadly probably going to result in being exploited. it's tragic for the innocents.