When should I prefer using ament_cmake versus ament_cmake_ros?

The only differences ament_cmake_ros add are:

• some ROS-specific capability to run tests isolated (with a unique ROS Domain ID)
• the non-ROS-specific setting BUILDSHAREDLIBS=ON at the project level
• setting ROSPACKAGENAME at the project level

I'm further confused because some ROS-specific formatting/linting defaults are hardcoded into ament_lint.