El Capital deliberately broke USB support
I've even got the email from Apple where they admitted it.
Well, "admit" is the wrong word. "Stated" that they deliberately reimplemented USB in a a different way to every other system, that while not explicitly disallowed by the standard, is the exact opposite of the technical books on the subject.
No, not bitter. We wanted to do firmware updates anyway. Especially ones that required a Windows machine to apply the firmware update that makes it work again on the Mac.