Yeah, you're wrong.

It's bad, but it's absolutely not unprecedented. The first time a similar issue was discovered was by Prozect Zero: https://googleprojectzero.blogspot.com/2017/04/over-air-expl... https://googleprojectzero.blogspot.com/2017/04/over-air-expl...

It has some pretty damning facts, including that most mobile devices have some form of IOMMU in theory, but they don't use it.

Later there was the Broadpwn vulnerability, which was very similar. I believe there were more of them later.