What does it mean to "temporarily revoke" a diploma? It seems like you either earned it or you didn't. Measures like expulsion and suspension might interrupt on

What does it mean to "temporarily revoke" a diploma? It seems like you either earned it or you didn't. Measures like expulsion and suspension might interrupt ongoing bad behavior with the consequence that people can't then finish earning their diplomas—but once they're earned, how does it make sense that they're retrospectively un-earned? It feels like such a mobster mentality—the diploma doesn't mean anything with respect to objective achievements, it's just a mark of someone powerful's favor, and you'd better stay in their favor...