In addition to building dashboards, integrating data and maintaining a data pipeline made up most of what I did as a commercial Forward Deployed Engineering (FDE) intern. From what I've seen, this is what most FDEs do. Software engineers, business cultivation engineers, and people in other positions do other things, and I don't know what FDEs outside of the commercial umbrella do.
I think your assessment is correct, though most people I worked with really enjoyed doing that kind of work for many hours a week.
It's not for everyone though, and it wasn't exactly what I was expecting when I accepted the offer. For example, I was expecting that FDEs would be doing more analysis on the data.