It is a bit reductionist, but so is "don't harm infrastructure". Infrastructure can be harmful, just like anything else.
And in the end most criticisms about consequentialism are either about how to retroactively declare something moral or immoral (which is irrelevant for deciding the best path now without future knowledge) or are qualms with one particular way of weighing harm vs benefit. I'm perfectly fine with considering third order effects in the calculation, and an action that saves a life but errodes society is not necessarily "good" since the ultimate harm may outweigh the benefit. In fact it's this very kind of reasoning about higher-order-effects that would lead you to the conclusion that sabotage could be justified in some cases
And in the end most criticisms about consequentialism are either about how to retroactively declare something moral or immoral (which is irrelevant for deciding the best path now without future knowledge) or are qualms with one particular way of weighing harm vs benefit. I'm perfectly fine with considering third order effects in the calculation, and an action that saves a life but errodes society is not necessarily "good" since the ultimate harm may outweigh the benefit. In fact it's this very kind of reasoning about higher-order-effects that would lead you to the conclusion that sabotage could be justified in some cases