So that excludes student debt levels (ie the inflation of the price of entry into the workforce) over that period. It includes people aged 40-100 who probably also outnumber and out earn the 16-40 demographic - who I assume dominate the only fans vendors being discussed.

The median as a measure will basically exclude the entire demographic. Eg Say for argument everyone in the workforce for 10 years or less had a 50% pay cut it won't show up in the median.

Real data is hard!