From where I stand, there seem to be two ways to move forward with this - neither of them are ideal (otherwise society would have overcome this issue centuries ago)
1 - you identify who has mental health issues or a behavioural disorder right at the beginning of every meeting - that way people can adjust their behaviour towards that individual, as they see fit - this can also be classed as discrimination, in a certain light.
2- you buddy those people who need special consideration with people who can inform the people that dont know them as and when appropriate.
As I see it, bushcrafters are a tough and mostly solitary lot, and more aware of how to do things in a bushcrafting environment, and as they have honed their skills and are not overly apt to suffer fools gladly - if you display behaviour in common with someone who would annoy them, you either have to explain, or face the consequences for socially 'challenging' behaviour. I have taken people with aspergers and severe depression camping, and have tried both approaches - neither are perfect, but this is more due to society blurring the edges of mental disorders and illness and that of anti-social behaviour, brought on by poor parenting.
If we could rely on everybody without such a disorder to behave to a reasonable standard, it would be obvious who had such a problem, straight from the start of the conversation.