You're right; we should use our heads. For years and years, whenever someone was sick, especially with anything more serious than a cold, we understood that they should stay home. Employers, schools, shuls, and other gathering places have consistently asked people with strep, bronchitis, flu, and other contagious diseases to stay home to keep others from getting sick. Comes Covid, and all of a sudden we're painting with broad strokes? Something that has the ability to cripple our community's infrastructure and cause actual deaths, and we start looking for loopholes?
If a rov discussed with local doctors and there is both a medical and halachic basis for these decisions, they should be publicized. I'm not saying they don't exist; I've just asked what they are. Crickets.
And please don't throw the Peaceful Protests in here. No one, and I mean NO ONE, has said that anyone who is Covid+ or Covid exposed can or should be at protests. Is there a double standard in public policy? Sure. Asked and answered and it's wrong. But this is not that. This isn't shutting down shuls or schools or stores or even parties. This is keeping sick people at home.