I wrote an article for .NET magazine a few months ago regarding Flux and UX. (linked below) Admittedly an attention grabbing title, but a legitimate sentiment.
Further to the article I view web 2.0 [read: user generated] in the early 2000s as the genesis of UX as a department (specific to agencies) and finally believe that life-experience of the new workforce is catching up to social such that we, as leadership, need to adjust.