Its understandable to question things after long periods of no major updates alot of people have said similar things. Over the time I've followed HHG I understand that he has changed a ton of things with chapter 1, like planning to have 7 chapters, then 4, then planned to release entire chapters at a time, then talked about releasing chapter 1 in multiple parts. Hes also gone back and redone most things multiple times because he wasn't satisfied with the end result, hes also improved massively since 2020 as far as graphics, animation, custom assets and UI and scenery goes. The whole project is a pretty ambitious learning experience for him from what I've seen, which is why I discourage others from pressuring him to rush things.
Right now as far as I'm aware he wants to put out chapter 1 as a huge update that easily doubles the overall content if not more, and then start releasing smaller updates more frequently afterwards