They have always known that the first few months of production were going to be "production hell" for the model 3. While the model 3 production has been worse

They have always known that the first few months of production were going to be "production hell" for the model 3. While the model 3 production has been worse than they hoped for (elon musk always underestimates timelines so if you know how his companies normally operate, it's normal) but a 3 month delay for a massive hardware engineering project is not end of the world.