I guess if one really wanted to show off the libraries, they could create some sample programs that'd render some sample messages to plain text, TUI or even a web page, but that seems pretty out-of-scope for the simple blog post like that one.
Hasn't happened just a month ago or so.
Funnily enough, curl (not a recent version, I might add) works fine.
P.S. Downvote all you want, but provide a reason. My message just stated facts, not an opinion.