Not all data scientists are the same. Sure, this probably isn't useful for someone without much coding experience who ya experience with the Kerala API, but for people who want to code custom architectures to solve their problem (which is also very common), the static type checking enabled by Swift, among other things, is very appealing.

> Low level swift code (what's likely to be in TF) can be as obscure as C++.

True, but I didn't encounter it in the wild yet. Usually Swift used in "Python mode" is fast enough.