One is "hey, terrorists or enemy states could destroy our entire grid, we'd all be fucked if this happened, here's what needs to be done to protect ourselves", the other is "hey, these powerful groups are destroying the planet for personal gain, do you think it might be justified to sabotage the tools they use to do that?"
Mass outages harm the public, sabotaging fossil fuel infrastrusture protects it. Even if the methods of the grid talk were applicable to such sabotage, which they really aren't, I don't see how hosting both of these discussions is a bad thing.