I agree that your definition would be more intuitive, but I think that ship has sailed. It seems to be almost universally used to mean "performing the required duties of your role, and no more"

I think it's an indication of a totally dysfunctional work culture that "not doing extra" can be synonymous with "not working at all"

The fact that the author claims to have given "200% of [their] energy" to their job "throughout their career" is, to me, depressing rather than admirable