First you claim that iOS is bad because a user could visit an untrusted website that runs the equivalent of the jailbreakme code and then later you claim that y

First you claim that iOS is bad because a user could visit an untrusted website that runs the equivalent of the jailbreakme code and then later you claim that your web browsing is safe from zero-day vectors because you do not visit untrusted sites. Perhaps if iOS users were assumed to follow similar habits they would have similar security; if so then the problem is not with the device but with the person driving it. The two common solutions to this problem are user education (hasn't worked so far...) and pre-emptive blocking at the browser. Would you now argue that for the sake of security we need more of a walled-garden approach to the web so that general users can enjoy the same level of security that you do?