My own personal health is such that I wouldn't have to be so conservative if I were thinking only of myself. But Covid isn't just symptomatic, it's also contagious, as in, I can pass it to others who may not be able to handle it as well as I can, including those that aren't merely antivax. So the idea is more that if Covid is doubling at some rate, I limit my social activity so as not to contribute to the spread.
that's factored in as 'sociability'. rather than limiting social activity, the exceptional mitigation could be to distance or wear a mask in indoor social situations (but no need to do so otherwise in most public spaces). you could also test beforehand if that was warranted (like visiting with elderly relatives).
