Comment by danaris

Well, first of all, there's a massive difference of threat scale between "the apps I have personally chosen to download and install" and "every website that I visit, even if only for a moment."

Second of all, there's no App Store review process for malicious websites. An app that wants to harvest your data will at least have to have some vaguely plausible useful purpose in order to even have a chance to try.

So I don't know about you, but personally, if you were to ask me, "Do you think a restriction that reduces the number of people able to harvest your data in this particular way by about 90%, or is it totally useless if it's not 100%?", I'd say go for the 90% solution rather than just throwing up my hands and saying it's hopeless.