Yes, LERA principles can be used in low-risk systems, but low-risk systems do not need the same level of governance structure as high-consequence systems. For low-risk contexts, LERA may help clarify a basic distinction: is this still a suggestion, or is it becoming execution?
However, LERA should not be casually claimed as a governing architecture merely because a system has some form of review or judgment. That would weaken the meaning of LERA.
In low-risk settings, LERA can inspire better design. In high-consequence settings, LERA becomes structurally necessary.
In low-risk settings, LERA can serve as a design discipline without claiming a full governance stack.