If you are a newcomer and look at Emacs what you see at first glance on the outside is basically total crap. The default behavior of Emacs distinguishes itself by the complete lack of sanity. Emacs key-bindings are neither ergonomic nor do they make any sense in any way. They are barely consistent across modes, only if you are lucky. They are the way they are because they are old. And old people don't like change. However my experience was, the more I learned the more crap appeared. One layer of crap after the other. At first everything could somehow be fixed with a lot of configuration and scripts. I needed several hundred lines of Lisp code in my init.el just to be able to work normally.
But then the lowest emacs layer of crap appears which can not be fixed. It includes issues like lack of multithreading, elisp being the least capable and at the same time by far slowest lisp dialect. Stuff like the lack of ability to move the cursor off screen. Inherent jumpiness while scrolling which can not be fixed and really strains my eyes. And don't even try to look at the C source, it is the worst historically grown ifdef hell you will ever experience.
And finally there is the community which lacks disposition to unify or work together. It is more like a community of loners where each of his own produces personal "modes" which are inconsistent to use and most of the time conflict which each other. The most important reason for this might be lisp itself. It is inherently hard to read other peoples lisp code. So everybody writes his own.