When people talk about extreme wealth inequality, they aren't talking about the existence of individual outliers from the mean, they are talking about the overall characteristics of the distribution function as shown in measures like the Gini coefficient.

A coherent community smaller than the whole universe of interest that demonstrates the same distributional features can be an example of extreme wealth inequality, an individual cannot -- this is important, because you can have extreme outliers with a relatively flat overall distribution, so its an error to try to say that being against extreme wealth inequality (in the sense that people are usually speaking when complaining about it) means being against any individual extremely wealthy person.

I expect the above was at least partly a joke - inequality is a relation between multiple parties, so not a property of one individual. Obviously, points of reference were implicit.