A person traveling to this event doesn’t even register as a blip on the carbon emissions scale, please stop this rhetoric that implies your average person can have any meaningful impact.
If you start segmenting the set of people along all possible dimensions in order to find "local outliers", then eventually, everyone will become an outlier in one of the sets.
I think it's reasonable to say that everyone should do as well as they can, and if everyone does that, the average person will have an impact.