Does this use AI? I mean it may use ANI = Artifical Narrow Inteligence. But frankly, that is basically Bayesian networks and a lot of big iron.
Most of this is a discussion about semantics, which is silly.
In 99% of industry, AI is used as a synonym for Machine Learning. The remaining 1% refers to Artificial General Intelligence, which is a long term vision for what might be achieved using, again, Machine Learning.
I think a lot of it is ANN based now, but it worked pretty well when it was just KNN. Calling KNN "AI" is pretty cope; it's just a database query. Of course, the large ANN networks are also more or less just a database query refactored as a function transformer, but nobody likes to talk about that.
If you don't consider machine learning AI, then there are no existing instances of AI. It's all either ML or vaporware.
The state of the art is using transformers I believe, which are a special kind of ANN
Recommendation systems are probably one of the most significant advance, YouTube for the à user that actually care about discovering wonderful content/music is a marvel thanks to machine learning. I also believe that Google search use ML to some extent.
Text to speech and speech to text give a voice to the disabled
Translation make knowledge and communication accessible
But the most important technologies like dependency parsing are enabler of a future AGI that could transcend human intelligence in some revolutionary metrics.
Just look at this non exhaustive list of what AI can do and how well:
https://paperswithcode.com/sota