[Spooky23]

The author of the post specifically addressed this:

“Today, CR is represented by U+000d and both LF and NL are represented by U+000a. Almost all modern machines use U+000a to mean NL exclusively. That meaning is embedded in most programming languages as the backslash escape \n. Nevertheless, a minority of machines still insist on sending a CR together with their NLs”

Who is the “minority”?

He also takes the position that the legacy behavior is fine for a tty, as it’s emulating a legacy terminal.