Was there? By 2016 it felt like nearly 80% of frontend development was happening in react. Even startups in central FL in 2015 were all in on react then. That's barely 4ish years from first introduction. That's quite fast in software adoption.
Definitely feels more geographically based then. I worked at Humana and Comcast, they were both on the react train by late 2015/2016. This was northeast area.
