I don't think anyone's under the impression that this is a perfect solution. But it's better than nothing, and the options are this, nothing, or a security barr

I don't think anyone's under the impression that this is a perfect solution. But it's better than nothing, and the options are this, nothing, or a security barrier that can't be bypassed with a permission prompt. And it was determined that the latter would break too many existing sites that have legitimate (i.e., doing something the end user actively wants) reason to talk to local devices.