For example, the README.md links to cyphar's repository, not stgraber's, and this page says it was forked from cyphar's repository.
The existence of this page merely suggests that stgraber is contributing, or intends to contribute, to the fork. Not that he forked it himself.
Perhaps he did fork it, or does intend to be involved in maintaining this fork, but I think the editorialized HN headline "forked by former project leader" is highly misleading unless there's actually something that demonstrates that stgraber is intending to run a fork, and this page isn't it.