Well, presumably it’s not meant to be suitable for designing large/complex circuits, but rather to solve just the specific problems that Moore had when he wante

Well, presumably it’s not meant to be suitable for designing large/complex circuits, but rather to solve just the specific problems that Moore had when he wanted to make a chip. That’s an essential part of Forth philosophy: write only and exactly what you need. Forth itself is designed this way, to be the minimal useful tool you can bootstrap in a few dozen instructions on a chip with almost no resources.