AFAIU this is a discoverability problem, not that emacs isn't featureful ootb. Some of emacs's built-in features (e.g. undo in region) are even not supported at

AFAIU this is a discoverability problem, not that emacs isn't featureful ootb. Some of emacs's built-in features (e.g. undo in region) are even not supported at all by other editors.