> And they can't even write a single proper function with modern c++ templating stuff for example.

That's just not true. ChatGPT 4 could explain template concepts lucidly but would always bungle the implementation. Recent models are generally very strong at generating templated code, even if its fairly complex.

If you really get out into the weeds with things like ADL edge cases or static initialization issues they'll still go off the rails and start suggesting nonsense though.