Agree with all you say but would add that those large droplets from sneezing etc are not the greatest vehicle for the virus so it’s like fighting a house fire with Solo cups of water.
iirc that was the prevailing theory until after the vaccines came out. I don't recall it ever being in the news when it was determined to be airborne. By that time, COVID wasn't even newsworthy.
I'm on team "ball was dropped badly re pandemic policy and communication", though I personally don't extend that to blind distrust in institutions in general. It was a tough (arguably unprecedented) situation in a media landscape primed for misinformation.