[Quot]

One of the benefits of 4.0 is also the modularity of it with GDExtension. The major parts of the engine (including the physics) can be swapped with replacements without the need to recompile the entire engine. I'd usually say that is a long shot for community run projects, but even Bevy engine has community made extensions for separate physics engines.

https://bevyengine.org/assets/#physics

Forgetting about extensions, though, I see your point and almost agree, but Godot has shown that they will put in the work to improve their project, even if that means removing features like they did with visual scripting. Their physics engine will definitely be rough at first, but based on their past work, I believe they are willing and able to maintain it.