Serious answer, don't use Safari. Use a browser that properly separates webpages into isolated processes so that this kind of cross-site read is not possible.
There’re no other browsers on iPhone. Every iPhone browser is a reskin of Safari. They’re in theory supposed to allow other browsers in the EU, but AFAIK it has not happened yet.
It will work unless someone forgets to add a public suffix into the public suffix list (as described in the FLOP paper). Both of these attacks target virtual memory pointers.
> While FLOP has an actionable mitigation, implementing it requires patches from software vendors and cannot be done by users. Apple has communicated to us that they plan to address these issues in an upcoming security update, hence it is important to enable automatic updates and ensure that your devices are running the latest operating system and applications.