I think Blender, and to a lesser extent Godot, were able to start making leaps and bounds like that due to funding as well. My memory is hazy on it but I recall probably 5-ish years ago the Blender foundation got a massive capital boost, and Godot has seen a lot of big name donors recently due to the Unity debacle. As far as I know, that hasn’t really happened for GIMP yet. I used early builds of both Blender and Godot, and the difference is night and day with how much they’ve managed to mature. GIMP on the other hand looks and feels largely like it did in 2010 IMO.