To those who say that if I don't sideload then this change won't affect me, I don't think this is true. Just because there aren't many alternative app stores on Android doesn't mean it won't happen on iOS. Developers will do this if there is a financial incentive. This is a forced fragmentation of the App store and will do absolutely nothing to improve the experience of a normal, non-HN-reading end user. This will in fact weaken the security for a normal user because they now can be tricked into installing malware without jailbreaking their phones.