No it didn’t. He’s talking blanket deputation of everybody with guns, including strangers, and as I pointed out possibly rioters. Old days of posses you picked your people, and you went with folks you knew could be trusted. Not “hey everybody with a gun, including you bad guys that are why we’re arming in the first place, let’s go”. That’s just dumb. Sounds cool, but where the rubber meets the road there are tire spikes.
In common law, the “posse comitatus” was basically indistinguishable from our Consitutional concept of the “militia”, at the county level. By default, it consisted of all the armed, able-bodied men in the county.
Now, in practice, you are right, Sheriffs usually just deputized “picked men” rather than calling up the entire force of the posse, but by definition, the posse comitatus does include everyone that can get up and walk and shoulder a rifle.