If you're talking about naive bayes filtering, it most definitely is an ML model. Modern spam filters use more complex ML models (or at least I know Yahoo Mail used to ~15 years ago, because I saw a lecture where John Langford talked a little bit about it). Statistical ML is an "AI" field. Stuff like anomaly detection are also usually ML models.

The A* algorithm doesn't have anything to do with machine learning either, but the first time I ever learned about it was in a computer science class in college called something like "Introduction To Artificial Intelligence".

But it's very much the case that the term "AI" has a very different meaning now-a-days during this cringy bubble than it did back in 2004 or 2005 or whenever that was.

Today "AI" is basically synonymous with "BS". Lol.