What makes you think that was the promise? I would say the promise has been to replace code with data, and to build things with data that would be practically i

What makes you think that was the promise? I would say the promise has been to replace code with data, and to build things with data that would be practically impossible to build with code. "Garbage in, garbage out" has been the mantra for a long time. Sure, there are tools and techniques to deal with not-so-good data, but those are add-ons, not a core part of the value proposition of ML.