For my money chaos engineering is a new name on an old technique, it’s defect injection testing for the kool kids. I think Netflix found an new application for defect injection and did it very well and made it part of their culture and created a science around it…which is great, it’s modernised a testing pattern which most people don’t do enough of anyway.
There are many ways of applying this in testing mentality without having to do it at the large network and architectural platform Netflix and others do, some may call that fuzzing. Regardless of your terminology, it’s all part of the same family of testing, which I would call defect injection.