Elon and Tesla are great at putting situations in positive perspectives. It appears to me that the 1k/wk run rate refers "only" the Fremont M3 production line. The GF1 M3 battery packs production rate was below that at the end of 2017.
Any data to support that statement?
My interpretation is that the 1k/wk rate on all lines phrasing was written specifically to include GF module/ pack assembly. Especially since it was the known bottleneck.