IMO...This is such a scary thing to do. You're basically driving blind for 30 seconds. Those 30 seconds or so seem like forever because you don't know how fast you're going, and i'm not even sure the indicator (signal) lights work.
While it's an uncomfortable situation to be sure, I wouldn't call it driving blind.
Driving blind would be if the entire front windshield was a monitor fed by an external camera, and the camera and/or monitor decided to reboot.
Not knowing your speed and having broken turn signals isn't "driving blind."
We need to be careful to reserve extreme terminology for actual extreme conditions. Would you be upset if someone yelled "Fire!" in a crowded theater because someone lit a cigarette outside a propped exit door?