Kalman filters are literally everywhere in the industry. If there is a radar or data fusion involved, you can be pretty sure there are Kalman filters. I know a researcher whose most quoted article is just him applying fancy new methods to actual industrial datasets and showing they perform worse than a Kalman filter.
What you wrote is akin to someone explaining to students doing signal processing that they should stay away from Fourier transforms.
What you wrote is akin to someone explaining to students doing signal processing that they should stay away from Fourier transforms.