[fullmetal]

This is a data point in favor of masks, no matter how minor.  What's the harm in advocating for policy action based on this data point?  Is mask-wearing so harmful that this incident has to be ignored?

If you subscribe to the superspreader theory, then you should advocate for universal mask wearing since we don't know who's likely to be a superspreader...so everyone has to mask up.

If you don't subscribe to the superspreader theory, then you might say that this incident shows how effective masks are, and you should advocate wearing masks in all situations.

The only conclusion you should not draw from this incident is that masks are the solution, even in close quarters.  That seems to be asking for trouble.

[fullmetal]

This is a data point in favor of masks, no matter how minor.  What's the harm in advocating for policy action based on this data point?  Is mask-wearing so harmful that this incident has to be ignored?

If you subscribe to the superspreader theory, then you should advocate for universal mask wearing since we don't know who's likely to be a superspreader...so everyone has to mask up.

If you don't subscribe to the superspreader theory, then you might say that this incident shows how effective masks are, and you should advocate wearing masks in all situations.

The only conclusion you should not draw from this incident is that masks are the solution, even in close quarters.  That seems to be asking for trouble.