I waited a while because I wanted to distance myself from the source conversation but…
Good UX helps people accomplish their goals.
It’s a real thing, no quotation marks about it. User Experience Design is a process and profession dedicated to the study of human interactions, generally with the desire to understand individuals’ needs and figuring out how to best meet them.
One of the core tasks is studying how something will be used, to ensure the interacting individual is more likely to reach a positive outcome. This can range from ensuring something is intuitive and easy to understand; removing barriers; ensuring the options are inline with expectations and that the steps clearly move people toward their desired outcome; redesigning something to meet actual use cases.