Why is BuildPipeline.BuildAssetBundle obsolete?

(The assetbundle system is a little strange - it has the editor side method to specify export names but then you have to make a script to manage the export process.)

What if you want to script everything to say just export the selected objects in the editor with a specific name?
In this instance the obsolete method to build individual bundles seems right so why do you have to rely on setting up names in the editor now and calling BuildPipeline.BuildAssetBundles or is there another way?

 

+1 for ability to right-click specific assets and export bundle.