actually blender can be used for games, it has its own engine, no the UI is not best everyone and everyone always have complains on it, even expert blender users as well as long veterans hate blender's UI in some context.
Again as for learning is still not the fault of the user its blender, what you think of blender is easy can also be said about Maya or 3dmax. Since you do not know how these software work (i know because it cost too much) you cant just say "it's easy, the ui is good, nothing wrong" because the fact that Maya and 3dmax requires years of studying.
I learn how to use it by many books and watching tutorials, your blender learning will not help you. Autodesk softwares require more technical understanding. The job market to understanding Autodesk software is more favorable than making 3d art, people who are hiring want you to know how Autodesk software works not 3d art. When it comes to 3d art, you should already know it, they do not ask such things.
If you familiar with the anime 'New Game" the main character faces many technical problems, this is one example of such error: 
The main character spent hours, days, weeks learning Maya but never understood technical problems. This also happens in games a lot when a 3d model isnt "fix" it looks and works but programming wise it isnt. Blender also has this problem, many users dont even know such problems existed in blender, i bet you dont even know. So what i'm saying is, its blender fault not the end user who only learn from youtube videos or other people.
