The OP started the thread in the MBP forum and it was moved to this forum, so the OP was meaning Macs.
I'd take Rogifan's statement as rhetorical, a la, "If you prick us, do we not bleed?" If you program them, do they not compute?
Sure, if by "computer" one means, "PC," then computers have become a sideline product at Apple.
From my perspective, the genius of the smart phone is that it has repackaged the personal computer into a far more personal and universally acceptable form. It has eliminated dedicated devices like pocket calculators, pagers, cameras, iPods/MP3 players, and dumb phones, and replaced them with a single, general purpose computing device.
If anything, Apple hasn't abandoned its roots with the iPhone, it's returned to them following the detour into consumer electronics called "iPod" - a device dedicated, like transistor radios and the Walkman, to a narrow range of tasks.