Update the macOS to macOS Monterey 12.3 or a later version, and then start MATLAB. You can then run blelist with or without arguments to scan for nearby Bluetooth Low Energy devices.
Why scanning for nearby Bluetooth Low Energy devices using blelist in macOS 12 (Monterey) returns an empty table?
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MathWorks MATLAB Hardware Team on 28 Apr 2022
MATLAB installed on macOS 12 (Monterey) does not detect nearby Bluetooth Low Energy devices when you run blelist without arguments or with any arguments other than the "Services" name-value pair. The command returns an empty table. Connecting to a Bluetooth Low Energy device by using the ble object also fails because the device is not discoverable using blelist.