That's not completely false though. These radars have been used lately in Robotics as ways to provide speed measures in localization and Mapping algorithms (SLAM, or lower-level algorithms like VIO + radar). Providing a speed measure on top of images and IMU often greatly increases the precision of the result. Some of these algorithms are actually Deep Neural Network, so you could argue that these have been 'adopted' by AI.

Papers on the use of machine learning in Device-Free Wireless Sensing (DFWS) with Wi-Fi, https://scholar.google.com/scholar?hl=en&as_sdt=5%2C44&sciod...