There are actually IDE plugins which perform 'semantic line wrapping'.
But that is besides the point. Of course, it can make sense to add manual line wraps, especially if the developer intends to make his intentions clearer by using line breaks at specific points.
But lots of developers use formatting plugins to force line breaks anyways - and they are no better then the IDE linewrapping.
Comments
There are actually IDE plugins which perform 'semantic line wrapping'. But that is besides the point. Of course, it can make sense to add manual line wraps, especially if the developer intends to make his intentions clearer by using line breaks at specific points.
But lots of developers use formatting plugins to force line breaks anyways - and they are no better then the IDE linewrapping.