I have seen similar. I wonder if a new set of people are old enough to use SO now, and their style is different than the original community.
Rather than ask it to write a full ansible job, try asking it the question you would ask on Stack Overflow (i.e. you probably wouldn't ask Stack Overflow to write the full job for you).
I wanted good ways to deal with pointers to 2D arrays in C, which aren’t hard but you need to remember that [] has precedence over *, so (*pointer)[x][y] is needed to deference. It’s not the hard to mess it up. Ultimately GPT had an OK answer but… it had that immediately without searching and the didn’t have to craft some well written example, it picked up my dirty explanation no problem.
I have the 2D array typedef’ed now, but it’s still confusing to read and hard to work with. I’ll search tomorrow on it.
Also, in C++, you can set your clock to someone commenting that you should just use smart pointers. It doesn't matter if the question is entirely unrelated.
As someone who spent a decade helping people answering code questions on Flashkit and later SO, I find the SO community and moderation now to be so off-putting that I avoid asking anything there if I can. I still give answers sometimes, but I'm much less likely to be on the site at all.