It’s not really the end of “big data”. There is and will be tons of data to go around for the foreseeable future.
Instead, it feels more like the end of “data science as the sexiest job of the 21st century”.
DS is mostly running reports (so BI) or stats (perennially important niche) or manufacturing hype via “latest research”.
Engineering has been, is, and will continue to be the foundation for success.