I didn’t, no, but perhaps this merits a clarification.
The native habitat of a traditional Forth is an 8-bit microcomputer, and compared to modern microcontrollers those had not a lot of compute but fairly abundant RAM (not to mention permanent rewritable storage). So to run a Forth organized along the usual lines, with a flat address space and a singular dictionary space and code loaded from textual blocks and so on, you do want 64K of RAM, I think. You could push that down to maybe 16K, with some limitations[1].
But on a modern 8-bitter with 2K or 4K, you are going to need a system that can compile things offline, and then you can flash the resulting image and do your interactive work within a small in-RAM layer on top of that. That’s absolutely a thing people do, but it’s not what Starting Forth, Thinking Forth, and various other sources about Forth describe.