The question isn't whether or not it can happen, I think everyone agrees that this virus can spread through both presymptomatic and asymptomatic individuals. T

The question isn't whether or not it can happen, I think everyone agrees that this virus can spread through both presymptomatic and asymptomatic individuals. The question is how common is it? How large a percentage of all cases are caused by it? And the whole "always wear a mask" hinges on asymptomatic/presumptomatic spread being high. Because if it isn't high, then we're focusing on the wrong thing, we're needlessly being suspicious of every single random stranger, we're choosing something that's easily virtue-signalable, over things that actually stop the spread.