I'd be the first to say that Musk is often a terrible communicator, and Twitter is a poor way to share this sort of information, especially for someone who is tone deaf. I am not defending him.
Was he lying? I don't know and I don't have access to his data. I do believe that there are huge supply line issues as
@OliverM3 pointed out. Holding off deliveries for months because they don't have chargers for them would be foolish, in my view.
For what it is worth, when I asked, every one of the people who ordered when I did and still don't have their car said they would take it now without the charger rather than wait a few months more. They would get the charger later or take the money or deal with it another way. Not a statistically poll, but interesting.