Common tasks for the web are easy in curl—though it will take me a long time to forget environment variables that could be set to false, true, or two. Httpie makes web apis easier, with better support for api keys and for hashing some headers into others, holding state across several command invocations, that sort of thing.
This seems like a pretty weird example. All common tasks in curl are very straightforward and I've never even heard of httpie.
Let's please not change the interface to basic command line tools every few years because people want something ""modern"".