The dialog clearly warns you that if you have something to delete, it will be deleted, but it doesn't let you know if there is anything to delete.
That's not in itself a huge problem, but in this case it was compounded with the fact that the generic repo he was acting on is named inconsistently for users vs organizations, and he had just done it on his user account. If I'm reading correctly, a user's profile readme repo is `<user>/<user>`, while for organizations it is `<org>/.github`, and, crucially, `<org>/<org>` is almost always going to be the core project for that org.
So yes, the warning says you will lose all stars on the project, but in the moment it would have seemed (to a fallible human brain who was in a user-space context) that this was the right repo, whereas a "you will lose 54k stars" message would have broken the user out of that space.
That's not in itself a huge problem, but in this case it was compounded with the fact that the generic repo he was acting on is named inconsistently for users vs organizations, and he had just done it on his user account. If I'm reading correctly, a user's profile readme repo is `<user>/<user>`, while for organizations it is `<org>/.github`, and, crucially, `<org>/<org>` is almost always going to be the core project for that org.
So yes, the warning says you will lose all stars on the project, but in the moment it would have seemed (to a fallible human brain who was in a user-space context) that this was the right repo, whereas a "you will lose 54k stars" message would have broken the user out of that space.