I have a feeling that the Apple of old would have caught this instantly, when it was largely the boutique brand for creatives. Today's Apple? Not surprising at all.
They've literally always been form-over-function. They may have caught this issue and said "those people can disable this completely optional feature".
It’s definitely a bad design especially given the context of existing mice, and a case of poor communication, or insufficient user testing, or even hubris maybe. Your dismissive summary of their intentions is not at all fair, however.
If you carefully held it in a very particular way, you could make it lose a couple bars. Jobs said: there's no reception problem, just don't hold it that way. It turned out he was right.