But really, technology is rarely the issue in and of itself, the issue is the system/motivations/logic/power dynamics it operates within.
So AI won't save us, no more than the steam engine, electricity, computers, etc. saved us. Not because it can't, but because it won't be allowed to. Sure, as whole, we might benefit from these technologies, but ultimately one group of people is gonna benefit the most, while another group is going to become all the more exploited (a dynamic that is ultimately unsustainable).
Any increase in productivity (and therefore value) that technology brings about (especially since the 70s) isn't distributed to labor, but rather used as an excuse to drive down the value of labor and increase the surplus value or profits of capital. Therefore, AI, which could reduce the amount of labor humans have to do (a good thing), is instead (due to the logic of capitalism) used as a way to eliminate jobs, drive down the cost of products, and discipline labor by casting people into precarity (a bad thing).
So I guess AI may destroy us, but it's not AI's fault. Capitalism's inherent logic is to blame. But also, I think the abilities of AI are being blown way out of proportion and simply used as the latest bit of speculative fodder to fuel market growth.