Children of a Dead Earth is a tactical space game with n-body Newtonian physics. This means that on the surface it is very similar to something like KSP, you can do things like orbit a Lagrange point. In addition, you can design all the parts of you spacecraft and weaponry down to the materials they use. If you can make a fuel tank made out of aerogel work with the laws of physics, then you can use it. For example, I made a coilgun that fires nukes which was devastating at close range but the low velocity of the nukes made them easy to dodge at long range and without any thrusters, they cannot course correct.
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!