I think I can help disambiguate a bit. "is not a strategy" is a bit of a tip of the hat to "hope is not a strategy", the full extrapolation of which means that

I think I can help disambiguate a bit. "is not a strategy" is a bit of a tip of the hat to "hope is not a strategy", the full extrapolation of which means that a plan is not equivalent to strategy and an unexercised strategy is the definition of hope. An analog is when I was in the military we wore every level of MOP gear once a year to ensure that your gear functioned correctly and that you knew how to wear it. On a second day we would enter building filled with chemical irritant where you must dawn your mask, clear it, breath, and communicate. All of this is part of proving the plan which equivocates to strategy. We've not faced an imminent CBRN threat in decades, but we still do it because we maintain a strategy for dealing with it. In this case, if you have a plan for how to deal with too much heat or too little power but you don't actively put the systems that transfer the responsibility or get put under stress during these disaster events then you never actually know for certain that they'll work. Therefore, they are not strategies, just plans.