Of course you can use them for whatever you want. Its also not disputable that some people will be more careful than the other. The issue however is that the idiots who pushed for widespread usage of AIs in the companies, i.e. clueless MBAs, have also pushed them onto exactly the types you are mentioning - the ones who will screw things over because they are incompetent or don't care, or most likely - are both of those things. So it's not a criticism of people who are careful in their usage of LLMs in critical scenarios - it's a criticism of the morons who bought into the AI hype and really believe an LLM will produce equally great terraform code previously written by 10 engineers at the 1% of the cost.