[anecd0te]

I can't link for hopefully obvious reasons

In user studies it was found that beginner/novice coders (or really, users that aren't SWEs) autocompletion was the most requested feature for improvement in IDE support. It's foundational for understanding what they can write and making sure it's valid.

And that makes sense to me, if you have a lot of experience in a codebase and ecosystem it's not as important. If you don't then typing `.` and seeing a bunch of aptly named methods show up, then snippet completion for their arguments to tab through them, you are immediately productive. Autocomplete turns known unknowns into known knowns.