The browser internals aren't userspace. Web Extensions are userspace. The browser internals are more like kernel space, which the Linux kernel breaks, all the t

The browser internals aren't userspace. Web Extensions are userspace. The browser internals are more like kernel space, which the Linux kernel breaks, all the time [1]. [1]: https://github.com/torvalds/linux/blob/e7aa8c2eb11ba69b1b69099c3c7bd6be3087b0ba/Documentation/process/stable-api-nonsense.rst https://github.com/torvalds/linux/blob/e7aa8c2eb11ba69b1b690...