As with the Bytewax story - it's interesting, but not something one does easily.
Don't get me wrong - this is a great article that dives into the data science/modeling aspects of trying to do anomaly detection right, at scale. This is a great example of when one hears somebody say "oh just use machine learning" - that stuff ain't easy.
ML/AI is important, where we're going in the future, and really what's probably going to allow us to get our jobs done. But if a vendor (or coworker, or manager) does the "it's so easy!" thing - push back.