Dev's used to mod alot more back in the old days simply because the mods where little hobby projects that the devs would work on if they wanted to test new game features or simply just make something that wasnt planned to be in the game, like SSRB or the Crown Vic from Nadeox1, nowadays since it's so complex to implement a vehicle or map or whatnot into BeamNG the idea of doing even more work outside of the already huge workload just doesnt strike with the devs