I don't see this as being about group size or risk. Rather, I see it as being about resources.
There is one group who are consuming medical resources in such a way that it is limiting access for others. And the reason for this consumption is largely a personal decision to not take precautions that would prevent such consumption.
If 'gang banging' or any other elective activity (or lack thereof) were resulting in a similar situation, I think it would be right to explore the idea of limiting access for those making such decisions to ensure access for others.
There is one group who are consuming medical resources in such a way that it is limiting access for others. And the reason for this consumption is largely a personal decision to not take precautions that would prevent such consumption.
If 'gang banging' or any other elective activity (or lack thereof) were resulting in a similar situation, I think it would be right to explore the idea of limiting access for those making such decisions to ensure access for others.