I understand what you mean, having used Revit for quite some time while there are many frustration in Revit but there are other things I like such as additional 2d lines on top of a 3d model etc.
Depends on whether you need the section to be linked with the 3D model to update on any changes further down the line, if not you could convert the section to a 2D line drawing in designer layer and add any further details needed.
Alternatively I tend to add them on annotation layer in the viewport.
Typically for the work that I do, I model everything in 3D.