I always think of ML https://en.m.wikipedia.org/wiki/ML_(programming_language) when people abbreviate Machine Learning to ML :(
For one, at least IME, it's rare these days for someone to use ML to mean a specific programming language. They'll say SML or ocaml. Just ML ends up getting couched into phrases like "the ML family of languages".
I must admit I had the same reaction to this post, and thought that calling it Julia Academy was odd if they were going to teach other languages.