I really don't get what you're saying.The old rule about local real estate was a doubling every 10 years, and that trend had been tracked by local realtors, going back quite a few decades before I even bought my first home. I hope that trend continues, as home value is a very big part of retirement cash-out, for many.
The point that one should not ever use an average to describe a very asymmetric (income) distribution remains. Using the much more appropriate median, the case is clear.
Moreover, the "home prices double each 10 years" illustrates my point, because median salaries do not double each 10 years (for those of the same age - mine has come close to that, but I'm lucky).