I believe the point of the guided games is to not only experience/learn the content but to hook you up with players who you may connect with and end up adding as friends/joining clan in order to then have people to play those activities with regularly- it is to learn and connect, not to matchmake for your weekly powerful engrams
The point is for solo players to match-make with players in a clan to complete activities that normally couldn't be completed on their own. It serves as a way to not lockout people from certain activities