While I like curl, this is highly subjective, some people just prefer a GUI that can guide you and/or be visually explored.
This whole piece also reads like someone is quite angry at people preferring a different workflow than them. Some aspects, like shell history, are also not the magic bullet they propose here as it doesn't, e. G., cover the actual responses.
Curl's ability to do almost everything is a minor curse here too as it means that any documentation (man pages, options help) is very large.