“Groups are for making disciples, not just making friends. Friendship is a bi-product of becoming disciples together.”
Many groups have as their starting point and goal to become friends.
While this is important, if this is where the bar is set, this is what the outcome will be and becoming friends will be the only outcome.
On the other hand, if the goal and starting point of the group is to become mature disciples together, when all is said and done, those in the group will become mature disciples as well as becoming lifelong friends.