[zahlman]

FFMpeg's command line is practically a programming language.

Someone who only wants to convert from one format to another, and isn't accustomed to CLIs, is far better served by "drag the file here -> type an output filename and extension in the text box".

The problem (and the reason both FFMpeg and Handbrake exist) is that tons of people "only" want to do two or three specific tasks, all in the same general wheelhouse, but with terrible overlap.