That seems like an OK future to me? The AI-addled can have their fun, the rest of us can eventually step in to pick up the pieces. I know it can seem bleak at times but the knowledge hasn't evaporated, it's just that (IMO) the less-AI-enthusiastic are stepping back a bit to let the energy spend itself. And "LLMs can't become superintelligence" doesn't imply "self-improving machine intelligence is impossible", for that matter.