I had the same misunderstanding of your comment, as this other commenter https://news.ycombinator.com/item?id=45256978

I thought you claimed that Pixels also used eFuses to disable certain features after unlocking the bootloder once, like Samsung devices do. That's why I pointed out that Pixel devices have always had support for relocking the bootloader with a custom root of trust.

Your response to this comment https://news.ycombinator.com/item?id=45244933 made it seem that way, because you appeared to disagree that "Pixel devices don't have anything like the Samsung Knox eFuse, which blows after running a third-party bootloader".

I guess that was a misunderstanding.