He's just making it up. Like most people on ddf, fear mongering and flat out lies. Throw in a WhatsApp voice note about some guy shutting down the country, and you'll have it figured out
I am using logic to arrive at my conclusion. I am Israeli and have avidly followed this situation. I have a few apartments in Israel and my tenants are all foreigners. If I wanted to be optimistic i'd gain a lot more. But realistically, given the steps the Israeli government took and is taking, they will NOT open their border to risk of reinfection.
All economic concerns in Israel has been thrown out the window. Pesach too is a huge season (though not necessary a Chareidi one), and they are forgoing it. It won't be different for the 4,000-6,000 Chareidi families that come Tishrei time.