At least with Stack Overflow there's upvotes and comments to give me some confidence (sometimes too much confidence). With LLMs I start hyper-skeptical and remain hyper-skeptical - there's really no way to develop confidence in it because the mistakes can be so random and dissimilar to the errors we're used to parsing in human-generated content.
Having said that, LLMs have saved me a ton of time, caught my dumb errors and typos, helped me improve code performance (especially database queries) and even clued me into to some better code-writing conventions/updated syntax that I hadn't been using.