Now it seems to be mostly associated with rice cookers. They must do an amazing job, since it still seems to be people's favorite rice cooking tech!
https://en.wikipedia.org/wiki/Fuzzy_logic
However, it was demonstrated that it had no additional power over conventional logic, so interest faded as quickly as it rose. Which is not to say it is useless, but that rather than a revolution it became just another tool in the belt. It can be more convenient to formulate certain systems in fuzzy logic rather than binary logic, but it doesn't really create new possibilities. And programmers in the trenches were doing this sort of thing already anyhow, less formally, but generally effectively.
It was weird how loud it was for sure. New forms of logic don't generally get the red carpet treatment like that.
I don't know why a rice cooker would particularly care about "fuzzy logic" other than a bizarre marketing spandrel [1].
[1]: Since this seems an obscure usage of an already-obscure term: https://www.scienceabc.com/pure-sciences/what-are-spandrels....
[1] Also known as "classical mechanics". Despite widespread belief that relativity is a 20th century idea, the first person to describe relativity wasn't Einstein -- it was Galileo. Einstein himself saw his work on relativity as extending what Galileo had done.
If I head to head my zojirushi vs a bargain rice cooker with temperature detector, would I be able to tell the difference?
Could you do the job with a cheap one? Sure, but you can always make rice on the stovetop as well if savings/space are a big priority. This is a convenience appliance, and the convenience of the fancy ones is a significant improvement over the basic ones.