Max Verstappen was penalized for his crash with George Russell in the Spanish GP, but why wasn't he disqualified?

As well as being given a 10-second time penalty, FIA race stewards thought the incident to be serious enough to hand Verstappen three penalty points on his superlicence. That take

After Max Verstappen’s collision with George Russell in the Spanish Grand Prix, the Dutch driver made a shocking remark. In a battle for fourth with just three laps to go, Verstappen collided with Mercedes driver Russell at Turn 5.