USB-C is kind of a big mess. Reversable connector is nice, but power is wonky, alternative nodes are wonky, everybody wants to add more alternative modes to the point where the only thing universal about it is the conbector (and usb 2 compatibility)
I've given up on Apple rumors. Especially anything from a business web site. Nothing is good since the death of Think Secret.
If it's not on Apple's web site, it didn't happen and isn't going to happen.
Heck, even then Apple has its own vaporware.
Firewire is a standard — IEEE 1394.
There wasn’t any dirth of hardware for people who needed it and where it made sense.
(The firewire port was required because many early large projection HDTV sets had Firewire video ports and the FCC didn't want to suddenly obsolete millions of early adopters.)