Because capitalism ties together better lives an ideological belief in unbounded growth.

Will people's lives really be better once they're drowning or choking on wildfire smoke? But hey, at least they had cheap junk!

It's possible to have better lives as well as societal progress without endless growth. Technological progress, too, doesn't have to mean burning our oceans. We just gotta actually think about the costs and consequences of our actions.

Not every technological development is inherently good. Sometimes the cost is not worth the result. I posit the cost of AI so far has been astronomical, higher than anything else in living memory. The results on the other hand have been rather middling.

This is my issue. A cost/benefit analysis, not a strict no to progress.