Dispensationalism isn’t new or novel. The word “dispensationalism” is relatively new (a few hundred years old), but it simply describes the most conservative and literal reading of Scripture. It’s a hermeneutic that has been with us since the early church fathers, and has been a predominant way of understanding Scripture in Protestant, particularly Baptist, traditions since God's word first started being translated into the common language. It’s not a heresy, and there’s nothing weird about it. It’s simply a way of reading Scripture that takes it simply and says, “The Bible actually means what it says.” And yes, some conclusions about Israel do follow from a plain reading of scripture. I myself am not a strict dispensationalist, but the idea that it’s something new, novel, or heretical simply isn’t true. That idea seems to be mainly pushed by Jew-haters who need a theological reason for their hatred.