The lock is probably not integrated with the EPS system because mitsubishi probably only wants to make one EPS module for all cars in all markets. including mechanical key and markets with no steering column lock.
I can't imagine how cutting power to power steering would prevent it from locking up. What kind of stupid idiot lock design would unlock when power is lost. Maybe they cheaped out so hard that they used a solenoid instead of a linear actuator?
Allrock, you may also find it very interesting to know that base model mechanical key Hyundai and Kia vehicles up to and including 2021 model year dont come standard with an engine immobilizer. You have to pay extra to upgrade to a higher trim for an immobilizer key.
https://www.thedrive.com/news/43454/...n-car-epidemic