Is the rotor suspension mechanism extraordinarily unstable?
Electromagnet suspension requires electronic systems to stabilize it. With an electronic system active, provided the system doesn’t break, it is completely stable. In case of failures the rotor suspension mechanism has at least 10X redundancy; it needs at least 10 consecutive units to fail for the rotor to crash. Barring common mode failures (which have to be designed out of any system), such a failure is essentially impossible. Most normal systems have a redundancy ratio of 2 or 3. If the system did fail there would be a big explosion, but most of the expensive parts of the loop would be expected to survive; as would anybody launching at the time.
