Right, but that was before they knew about this exploit. My point was that even if they decided they needed to urgently switch to a multiprocesses architecture because it's the only way to mitigate this exploit, they might not be done yet.
This class of attacks is not new. Spectre demonstrated this possibility in 2018, and Apple was previously targeted by speculation attacks, e.g. https://gofetch.fail/ or https://ileakage.com/.
