>>123516461. He didn't invent AC current, he just sold people on using it for power transmission. Ironically, DC won the current war in the digital age.
2. He made some genuinely important contributions like the AC induction motor, but the bitter truth is that Tesla spent the last 40-ish years of his life duplicating the work of others with some added lights, bells, and whistles and spending a literal fortune in loans and gifts chasing down a bunch of confirmation biases and gut feelings while deriding actual physicists doing ground-breaking work on plasma physics, quantum physics, and relativity.