That's the beauty of the 12 Traditions.
The Group can do as the Group does.
There is instructions in the Big Book, in both "Working with others" and "To Employers"... that suggest that "we should"... judge their sincerity... as to whether they really want it or not... and, to not to waste our time with those who are not sincere and will not work with us.
To distinguish the difference: I believe that the 3rd Tradition is addressed to the Group, in regards "to meetings." And, the sections of the Big Book, is addressed to individual members of A.A.
There is a difference in a 12 Step Call, and "Carrying the message."
The short-form of the Traditions, the long-form of the Traditions, and the current Grapevine Preamble that we often read in meetings -- still focus that our work should primarily be towards alcoholics.... and, to help alcoholics to achieve and maintain sobriety and to recover from alcoholism.
Some Groups seem to focus on helping "any drinker" to stop drinking... and logically, this would be the same as saying that all drinkers would be alcoholics -- even the problem drinkers.
There is a difference.
BTW: The 12 Traditions Checklist that you're referring to: It has been here on the site and in the forum for at least a few years!