The glorified autocomplete only applies to the completions. Granted, that's often the primary interaction, but it isn't the whole story. Using chat+edits can enable copilot to make changes across entire file(s). I still haven't found it perfectly reliable for large scale edits, but it has proved useful for handling the sort of busywork that may occur when refactoring. I'd love to hear stories where copilot actually made meaningful contributions to unique/interesting projects. The demo's often showcase making mundane modifications to yet-another-website or spawning a project into existence, which is neither very compelling nor something I do often.