Cybernetics was something else. Also, it's dead. I think the word is only used today in Germany, and I think pretty narrowly, maybe meaning just control theory.

I don't think the word is often used in Germany today. I also heard it a few times used outside of Germany to speak about control theory in Quantified Self contexts and from other hackers.

In general very few people actively think in terms of control systems or cybernetics and even when they do they often don't use the word cybernetics.