> And receiving a formal warning is an extremely serious signal.

To be nitpicky, the article doesn't say 'formal warning,' just 'warning.' That could have been anything from a gentle let-down to a reprimand.

That being said, I think your broader point is reasonably true: the author frames the 'political games' of promotion as a regrettable necessity rather than a job requirement beyond the juniormost levels. Despite their self-description as helpful and cooperative, they disdain the dyadic sport of cooperatively making their boss look good.

That's not to say that one should submit to base exploitation, of course, but there's a fine art to understanding the constraints and incentives of others and working with (and often within) that framework.

A second skill is being able to separate the person from the position, to maintain friendly or at least respectful personal relationships with people who might be professional adversaries at the moment. This is harder, but if professional hostility reads as personal contempt that will definitely destroy one's social weight in an organization.

nitpick accepted :)