I'm going to ignore your (incorrect) armchair psychoanalysis of how I'm feeling, and clue you in to how game development works. At the beginning of a project, it's quick and easy to add new features because there's so little else to be concerned with or need to work around, and often there are things like third-party assets to bootstrap the early stages. As systems are built and matured, each new feature needs to be more carefully implemented into those systems so it doesn't cause issues elsewhere, or end up becoming disorganized spaghetti code. And yes, even with good and careful planning there is sometimes a need to refactor, as different solutions are found or become available that give a better result or more flexibility.
When I started on the current build I stated clearly
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that it would be a significant amount of time until the next build is released, and you can click that link to read the details of why, or check the other public Patreon posts for the status updates since then. It's been almost five months since starting on this major rework of character rigging/animation and all the new UI and tooling to allow for users to make their own interactions, and it's now nearly complete and ready for release sometime within the next few weeks. So yes, lately I have been largely working through smaller changes and bugfixes, because the majority of work has been done so that's all that is left. This is not a reflection of my mood, or passion, or indication that I am not able to do the work or keep momentum. It's the same pattern of development->refinement->testing that I do in every build, just on a larger scale.