Many people 60+ are feeling left out and jumping on the bandwagon. All ages who exhibit the Dunning-Kruger effect in this manner will likely never know they are clueless.
I'm 27, and the number of people I know around school (TAs included) is astounding, even in CS.
In my local (Fort Lauderdale, FL) best buy and apple store, there are plenty of these types of people too.
I think at BB when they figure out how to sell themselves they end up at the geek squad.
We are in an era where online businesses are starting to have a real impact on brick and mortar stores.
Until someone figures out a way to stream me a SATA cable that I'm missing for a new computer build I'm putting together on a Saturday, I think that Best Buy will be able to hang on for quite a while.