If you really want to deliver polished products, you still have to manually review the code. When I tried actually "vibecoding" something, I got exhausted so fast by trying to keep up with the metric tons of code output by the AI. I think most developers agree that reviewing other people's code is more exhausting mentally than writing your own. So I doubt those who see coding as too mentally straining will take the time to fully review AI written code.
More likely that step is just skipped and replaced with thoughts and prayers.
I do manually review. I don't think the quality of my output has reduced even slightly. I'm just able to do much more. I deliver features more quickly, and I'm making more money, so of course I'm happy. If there was no money in programming I wouldn't be doing it, I think that's the major distinction. I barely have any understanding of how a CPU works, I don't care. I build stuff and people are very happy with what I build and pay me money for it...