The next task to fall to narrow AI is adversarial attacks against humans. Virulent memes and convincing ideologies become easy to generate on demand. A small number of people might see what is happening, and try to shield themselves off from dangerous ideas. They might even develop tools that auto-filter web content. Most of society becomes increasingly ideologized, with more decisions being made on political rather than practical grounds. Educational and research institutions become full of ideologues crowding out real research. There are some wars. The lines of division are between people and their neighbours, so the wars are small scale civil wars.
Researcher have been replaced with people parroting the party line. Society is struggling to produce chips of the same quality as before. Depending on how far along renewables are, there may be an energy crisis. Ideologies targeted at baseline humans are no longer as appealing. The people who first developed the ideology generating AI didn’t share it widely. The tech to AI generate new ideologies is lost.
The clear scientific thinking needed for major breakthroughs has been lost. But people can still follow recipes. And make rare minor technical improvements to some things. Gradually, idealogical immunity develops. The beliefs are still crazy by a truth tracking standard, but they are crazy beliefs that imply relatively non-detrimental actions. Many years of high, stagnant tech pass. Until the culture is ready to reembrace scientific thought.