Putting double S on option-s just makes option-w for Sigma more grating. If they were going by shape, it'd be on option-b, which is equally stupid. But since it's on S, we can conclude that... someone at Apple knows German, but nobody can even name a Greek letter? That Germans are right and Greeks are wrong? What?
I don’t think it that extreme, but that German has higher precedence than Greek. If you need to include both characters, you have to pick one or the other, and for whatever reason this configuration happened. We might never know the true reason behind the decision, but stupility is unlikely the answer. Most seemingly stupid decisions (technical or otherwise) makes at least a certain amount of sense within its proper context, and it’s fair to talk down to it when you don’t have the risk of being judged by that decision.
Putting double S on option-s just makes option-w for Sigma more grating. If they were going by shape, it'd be on option-b, which is equally stupid. But since it's on S, we can conclude that... someone at Apple knows German, but nobody can even name a Greek letter? That Germans are right and Greeks are wrong? What?