But your point is right. "If possible" means "unless it's absolutely essential for your survival or the survival of others".
Pretending that the only disaster we are facing is medical is blinding yourself to the reality that we are trying to navigate our way between twin catastrophes.
[1] https://www.usnews.com/news/healthiest-communities/articles/...
[2] https://www.nytimes.com/aponline/2020/03/13/us/ap-us-virus-o...
[3] https://www.feedingamerica.org/sites/default/files/2019-04/2...
[4] https://www.theatlantic.com/health/archive/2017/07/how-job-l...
Plus, all the school districts that have shut down so far have continued to offer meals for students AFAIK.
Source: - https://www.buzzfeednews.com/article/lamvo/coronavirus-death... - https://www.santaclarausd.org/site/default.aspx?PageType=3&D... - https://www.sfgate.com/news/article/Bay-Area-school-closures...
People need to stay home, period. Unless you work in healthcare, a grocery store, or some essential service, or are going to one of the same, you need to stay home. I know there's lots of reasons people aren't staying home yet, like they don't have paid sick leave, but still, none of this overrides the sheer importance of stopping the pandemic.
So the phrasing should be "Stay home, period." Not "Stay home if possible".