No: this would allow such cameras to be internally connected to a custom-built phone via USB, but without the connector, oor using a tiny connector. Think Framework laptop peripherals, only built-in

"I wish usb cameras were sold in the same form-factor as phone thermal cameras."

Once you have the camera-controlling binary blob separated in an MCU behind a USB interface, you can run a modern kernel (maybe not even Linux), without running the binary blob in it.