Valid points. > Architecturally, it seems to me that Apple with their own SoCs, bootrom, RTKit, iBoot etc. has a stronger platform trust case because they actu

Valid points. > Architecturally, it seems to me that Apple with their own SoCs, bootrom, RTKit, iBoot etc. has a stronger platform trust case because they actually own the stack all the way with nobody else having a say about it. That's why I specifically and only mention Pixel in my comment. Google's been doing their own hardware since Pixel 6. (iirc) Daniel Micay, creator of GrapheneOS, once said that Google shares firmware / proprietary code for the Pixel hardware "if you ask nicely enough". Like you point out, eventually, one is left trusting a BigCo or worse assuming a flawed implementation is secure. Though, it isn't for the want of not trying. Or, to put it another way, "the best among the rest".