I like the article that you linked to, but I'm not sure why you think this is an infomercial. I'm just saying that UX doesnt solve all problems, and onboarding is an important part of any product.
I don't think you really understand what user experience design is. Good design doesn't automatically mean stripping out features. There is a delicate balance between simplicity, complexity, achieving business goals and user needs that all designers must strive for.
And yes, this is an infomercial.