In the past, workers complained that automation took away their jobs. The (roughly) same amount of wealth was created but the income went to fewer individuals (the owners).
This was a valid criticism but at least they could move onto other jobs.
AI, if successful, is different. Combined with robotics[0], it makes all jobs obsolete. Regardless if the amount of wealth created will be less, the same, or greater than before, the income will only go towards the owners and everyone else will become a beggar. That is the endgame.
If you believe the endgame is different, please game it out in your head and share what you think. Don't just reject this idea without thinking about it.
[0]: And even without robotics, true AI (AGI) would obliterate such a huge percentage of jobs it would create a shock and massive unemployment.