Norman Wildberger: Math revolutionary or grifter?

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This is the guy proposing we reformulate the current trigonometry system with something he calls "rational trigonometry", where distances are replaced with distance-squared thereby simplifying trigonometry and many other calculations. Seems to make a lot of sense to me, but I'm sort of a mathlet. I know the math is all technically correct, but would people actually benefit by learning this new way of viewing calculations. He is an excellent teacher if you watch his lectures on YouTube, but I can't tell if this is just unnecessary distractions so he can gain fame and recognition, or if there are tangible advantages to his methods.