I would go even further and suggest Boeing ought to ground them. If, as you mentioned, another accident were to happen, irrespective of the impact it would have on that airline, Boeing's reputation would be triply hammered.

Yeah, they dropped the ball on this one. Now they have a growing number of countries grounding it themselves which to me seems like a significantly worse look than if Boeing had proactively done it themselves (also keeps it in the news cycle longer as each new country adds itself to the list).