Osterholm is not some rogue scientist speaking for himself. He's the leader of the Center for Infectious Disease Research and Policy and is speaking based on their research. These people are among the foremost experts on infectious disease on the planet.
And masks aren't some brand new invention. Saying cidrap articles from (lol) June
2020 are "too old" is insane. And they have not changed their stance. Covid spreads primarily via aerosols, cloth masks don't prevent aerosols at all, and there should be a much bigger focus on n-95 masks. Now, they do acknowledge that cloth masks prevent droplets so they help... very slightly... but they help. So they're not anti-maskers saying don't wear them at all. But, as they say " we may very well be putting people in harm’s way to this virus by not giving them clear messaging about what cloth masks can and can’t do to reduce one’s risk of infection."
This transcript discusses the issue at length.
https://www.cidrap.umn.edu/sites/default/files/public/downloads/special_episode_masks_6.2.20_0.pdf
The article you quoted above lumps droplets/aerosols together for some reason. Look at the wording they use. You may ask yourself why they chose to do that.