That's just silly. You can still call a decision stupid without implying the tiresome doomed argument attached. Apple could quit the Mac business altogether and still not be doomed.
How would developers develop for the iPhone if there were no Macs?
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Apart from Emojis are decided by Unicode, not Apple. All they did was add support for what's coming in Unicode 8.
The list may be, i.e. Unicode give a description of the emoji but Apple would still have to design them.