Earlier quoted context omitted.
Internet speculation is that the power plant will be shut down once taken over. Which at least minimizes the ongoing risk of human error. Heck, shutting down is probably a far simpler process than continuing to run - nuclear power plants are designed to be shut down if necessary.
Well, shutting down nuclear reactor is not a simple process — it has to be actively cooled for weeks after being disconnected, which requires power, which you don’t have because you shut it down. So there should be either on-site generators (burning fuel) or external power . That’s why power stations usually have multiple reactors which are serviced on schedule, so it always has some generation happening. None of it…
And not being informed of well-known (in higher Soviet echelons) serious reactor flaws, like the grafite on the rods being inserted into the reactor core initially spiking the fission process significantly.