When Lizzie and I went through the Certified Professional Facilitator process, there was a Trainer (with a capital T) in our group who didn't get through (e.g. didn't get certified). There was a clear division between training and facilitating to which the assessors were incredibly sensitive. I remember myself, in one of the oral interviews, getting caught out providing a rationale for a facilitation choice that was more about learning than about strictly moving the process to its product end. The IAF facilitation competency is to "minimize the influence on group outcomes".
Of course this is highly contextual and I can completely understand the need for complete neutrality in facilitation. And at the same time, what an opportunity a face-to-face get-together provides to help a group develop - to learn to work together and make them better, stronger, faster in their tasks. Especially if the group will be working together again in the future. And if people go to many meetings (and so many people do), and they get enough of this "learning" through their facilitated events, they will become Super Team Members, versed on group process, and practically emerging facilitators themselves.
Building learning into facilitation seems an excellent way to build the capacity of a group to handle its own dialogues, discussions and processes in the future. And it takes some directed learning built in to do it. I definitely observe in colleagues that we have worked with repeatedly in this way develop, over the years, an increased attention to process detail, to interactivity, relationship building, and to the design part of a meeting.
This does eventually put you out of a job as the facilitator, and I think that is fine. It depends on your goal of course - if your goal is to help advance the community generally, then adding learning into your facilitation is a good way to optimise investments made in meetings. And it still takes a while, and gives you an interesting metric (slightly counterintuitive). If you are watching closely and notice that one of your partners is gradually bringing their process design and facilitation in-house, and you are getting less call-outs, or perhaps get drawn in more for coaching team facilitators, then this is a sign that your facilitation is building capacity. As long as the team knows you are there for them and can always come back to support their process as needed. This development can only be a good sign, if you are a Capacitator.
(click on the arrow below to see what I mean...)