I apologize if this is obvious but I do not understand why you wish httpie had an output to curl feature? Am I missing some sarcastic twist?

I'd guess it has something to do with curl being available everywhere and httpie requiring installation. Oftentimes you can't enforce that your preferred alternative is deployed where you'd like to run scripts, so http->curl.

I think they meant that it would useful to have it provide a curl equivalent command, much like chrome has in the network section.