Looking at the repo it does surprise me. A lot of contributors, well written tutorials, significant code base, and a lot of stars. Admittedly I know nothing about Swift and very little of tensorflow so maybe there’s something I’m missing. In any case making ML a first class citizen in any language would be an awesome development independently of the language IMHO so that’s why I don’t see the rationale of stopping the development?
Edit: just saw this Welp! Swift for TensorFlow Archived - #8 by ToucheSir