"I've yet to see any AI platform that is mindbending"

1. Siri / Alexa and similar for voice recognition and doing basic tasks.

2. Face recognition for uploaded pictures on Facebook.

3. Lots of people use FaceID on iPhones.

4. Tesla and other SDC systems: yes, it's not good enough for general use, but the fact that it mostly works in California is pretty cool..

"Mindbending" is subjective, but these all use DNNs, and are used by millions to billions of people every day. So it's incorrect to suggest that all DNN use-cases could be replaced with "doing basic math with a multivariate normal distribution".