Also John Carmack left Id in November 2013, to dedicate himself to VR till 2019.
So had nothing to do with Doom 2016 nor Doom Eternal jumps, haha.
He always was a genius programmer doing engines nearly alone.
Later whole companies took the torch.
Though he may have proposed designs or not, he never was a designer, and doubt he had the time for that.
So, Acleacius, come clean man, what have you been consuming, ah ?