There

Stirner is correcct: the egoist and his Association of Egoists are not antithetical to group involvement, or pursuit of and enjoyment of good will and social involvement.

Rather such ability and willingness to associate and disassociate with social groups, while primarily individual-living, as the egoist goes in and out of groups voluntarily without repercussion or loss of social standing, is how true friendship, good will and healthy social relations come about and are perpetuated.