One of the most challenging parts of being a graphic recorder is building up a portfolio of sharable work. The challenge is not in doing the work itself, but in doing work that is sharable.
Extensive non-disclosure agreements are often required for jobs. This could be due to highly confidential content. It could also be so people feel free to speak up without their comments being shared with the public at large.
Either way, the fact that much graphic recording is done behind closed doors and stays there, shows it provides far more value than merely drawing out a pretty picture.
The image above was done at the Shop.Org Summit, the only one non sharable with the public.