The author says he achieved text-to-SVG generation but doesn't point to a code repository for it... It would be super interesting (or does gpt-4 do it natively?)

That said, I'm not sure that you need GPT-4 for outlining a BW image and making a path out of it; Corel Draw did that well, over 25 years ago?

So yes, another approach to what the author is doing, would be to generate font bitmaps using any of the leading image generators, and then vectorize the bitmaps. Less straightforward and precise, but probably simpler.