"The mistake to grow from" had absolutely nothing to do with AI.
In fact, it was a repeat of the oldest AI error in the book: zealous overoptimism. By researchers, sci-fi authors, HN posters. Whether it's marketing people over-promising, or tech people under-delivering (like Google auto-categorizing photos of black people as gorillas), it's almost as if the constant failures are Nature herself trying to tell us something.
We'll get there, but not via Tay. She's dead and she took a few careers with her.