SARS COV-2 is the same virus as COVID-19. All scientific research uses terms of "probability" and "likely", especially early in the research.I see "probability" and "likely", not proven. Were any of the droplets examined to show the presence of the SARS virus and if so, did any of these viruses in the droplets survive during or after the dehydration? How closely are the SARS virus and the covid19 virus related? Were any of the speech droplets from symptomatic cases tested? Has this same speech droplets test been conducted on people who have the covid19, either symptomatic or asymptomatic, or is it just assumed that the covid19 is spread in this same manner?
Regardles, if the covid can be transmitted via loud speech, screw the masks and just talk softly. Keep the air in enclosed spaces warm and dry. YMMV.
Woody