He literally said in the comment of the same thread that the locals are the majority then terrorist gazans are the second contributing for terrorists acts.
Sorry but Hamas wasn't that cooperative a decade ago. There is dozens of tunnels between Gaza and Sinai for smuggling weapons for DAESH. Second during 2011 revolution, there were Hamas leaders in egyptian prisons and got out with help of some terrorists. So there is gazans terrorists who joined DAESH to kill Egyptians army. Then explain how the weapons were smuggled to Sinai.
I know there are some from Gaza, it is indeed true, they get to Egypt in a legal manner. The majority are local, however, and that's not to put spotlight on Egyptians, no. All of us have this extremist problem. What my point is the that the notion that Gaza is some staging ground for IS in Egypt is far from true. The weapons coming from westward of Sinai. In Gaza there is a severe weapons shortage, everyday we try to smuggle weapons into
Gaza, not out of it
. Weapons are very expensive for us, even the price of a bullet has skyrocketed. You seem to think Sinai is arms free due to Egyptian military presence there but it is not true. There is lots of arms there that come from western direction. And these IS terrorists only need few small arms to do damage. They do not have good tactics nor arms supply, they just stage cowardly attacks once inawhile which require no planning and few small arms.
If there is any way they are having some intelligence stream or logistics planning and so forth it's from foreign intelligence agencies which have interest in harming relations between Egypt and Hamas and also targeting Hamas smuggling routes. These so called IS have literally targeted Hamas routes before and targeted arms traders trading with Gaza.
The tunnels you are talking about were for trade, the military smuggling tunnels are separate and heavily secured by Hamas military wing. They have all have been destroyed, however, for several years now. And Egyptian army razed city of Rafah down, and you cannot dig far enough to deeper cities to make new tunnels. This is why Hamas now smuggles by sea and through border crossings(which Egyptian officers are in on, fyi, Egypt has interest in Hamas to have some strength).