Yeah, the great thing about WebUSB is that it can easily be used to upgrade devices to new firmware with new features. For example, suppose that some end user's

Yeah, the great thing about WebUSB is that it can easily be used to upgrade devices to new firmware with new features. For example, suppose that some end user's USB device lacks the ability to act like a USB Rubber Ducky and inject malicious keystrokes in order to compromise their machine. WebUSB allows a clean, easy way to fix that remotely. WebUSB terrifies me.