... undermines the confidence of the group regardless of how good a leader she may be in other ways?
Our slimming group leader has put on several stone over the past few years. She wasn't slim to start with and is now probably obese. She still talks enthusiastically about how she follows the plan and all the tips and strategies she uses to eat more healthily. But she's still getting bigger....
I would have thought it was a policy for group leaders to be losing or maintaining if they profess to be following the programme, otherwise it's damages to confidence of members that the programme is effective and sustainable.
Or am I being unfair? She's very good in every other way.