A FOSS tag would be nice for those that care about that. Also, both Mindustry and C:DDA are missing their free tags. Overall, a good list and plenty new things that I was not previously aware of!
If there is something you want to do and it isn’t simple and you think it should be, there is a good chance that there is a module that adds that functionality. Good luck!
Godot 4 drastically improved the capabilities of godot, especially in the 3d realm. It isn’t perfect, but I would say it is about on par with unity in terms of features. Note that some of the more advanced stuff are in modules that you need go download within the editor. This was done to keep the core light while not sacrificing features.
I agree for a specific scenario: if you don’t use many unity specific packages or assets. Then, perhaps you are correct, still I don’t blame anyone staying even in that case, as it is still daunting to take on such a task.
Apart from your first point, I think this just indicates that they hate m+kb users. There is a reason people say that people that use m+kb in a souls game are masochists!