I think the general reason that they say the regular masks are ineffective is to keep people from hoarding them. My first concern is with the projectile spittle from someone's cough or sneeze. A regular mask will take care of this and I wear glasses so straight line projectiles would be stopped. If I was in a place with multiple people that were infected, then I could understand how the smallest particles of virus might be floating around to get through a simple mask. But at that point I would expect it to get in my eyes so goggles or a full face mask would be needed in my opinion. I see video of medical workers risking their lives to get the job done, while wearing the good masks with no eye protection or a simple face shield. To me the eyes are just as vulnerable.