If something like that were to happen we’d still be pretty screwed with our current socioeconomic structure. We rely on power to move and do - any collapse of our current grid would be massively disruptive, regardless of if AI removes the need for individuals to work. If something like a solar storm knocked out AI, we’d still be missing most of what we needed to go back to “the way things were”, unless “the way things were” refers to pre-industrial life.