cables can be cut in 10 seconds. lets just say, if they really want it they are going to take it.
The only way the cables for that E-stopp controller can be cut in 10 seconds is if the thief already knows two things: First off they need to KNOW that it's in the vehicle and they need to disable it. Second, they need to know EXACTLY where the control box for it is located so they can disable it.
So no, they can't exactly cut it in 10 seconds, but a determined thief can and WILL eventually find it and disable it. Like mentioned, NOTHING is 100% theftproof, and a determined professional WILL get your vehicle if he wants it bad enough. Most Crooks will move on to a much easier target.
Back when I lived in New Orleans, car theft was rampant (and STILL is there), and I had a Oldsmobile Cutlass Supreme which is VERY easy to steal if you have no added anti-theft measures. Literally all you need is a flat head screwdriver. And it wasn't just the Cutlass, pretty much ANY 1990's or older GM or Jeep/Chrysler with the round steering column with tilt steering is SUPER easy to steal. So on my Cutlass I had a "Column Lock" anti-theft collar on my steering column, I had a removable steering wheel, I had a Viper alarm system, I had a kill switch in addition to the starter kill on the alarm system. And as if all that wasn't enough, I had shaved door and trunk lock cylinders not only be a use it looked sleeker with no lock cylinders on the doors, but from an anti-theft standpoint as well. If there's no locks to punch out, that makes it that much harder to break in. Also, on the GM G-body cars, there was a "flaw" in the way the frameless windows were designed. You could usually pull the glass back far enough to reach in and unlock the door, especially on cars with work out window tracks. So I removed my inner door lock rods and shortened them. I cut off about an inch and re-threaded the rod to screw the lock handle/pull back on. When I was all done, the door lock pulls were just barely recessed below the surface of the door panel. So when they were locked, the lock pull went completely down into the hole. By doing that, you couldn't reach in and unlock the door, even if the window was rolled down. The ONLY drawback about that (which I didn't mind) was that passengers couldn't unlock the doors either. You HAD to press the pwr unlock button to unlock the doors. Needless to say, by doing all that, my car was never stolen. Twice though, in all the years I owned that car, I came out to it to find my glass had been pulled back past the gasket though. So apparently someone tried but quickly gave up when they realized they had no easy way to unlock the door.
In a nutshell, the more difficult you make it to steal your ride, the more likely it will NOT get stolen. But NOTHING can stop a tow truck, and trust me there's plenty of hardcore professionals who actually have tow trucks they use to steal vehicles.