The whole "Oooh! Their hearts will shoot out their left nostril if we play!" garbage was just there to terrify parents and be available as a weapon to keep schools closed. As with all of the Panic Pronouncements, it falls apart under the barest level of actual scrutiny.
With the numbers falling for the past three weeks, and all signs indicating that the virus is burning itself out, the Panic Pushers will get increasingly desperate, and throw out progressively wilder and crazier things in an effort to keep the herd panicked. The whole "National Mandate To Wear Masks" is one of these ridiculous and tyrannical things: Wholly useless, but pronounced as if it is the Gospel and accepted by all the Media and other Usual Suspects.
Screw 'em.