I'll note that in another article[1], the author claimed that the delay in GigaMexico would push the next-gen model to 2027 and possibly bankrupt the company. According to Isaacson's Musk bio, Tesla moved initial production of the vehicle to Austin so their new production line and their engineers for the car would be in the same place.
[1] https://bradmunchen.substack.com/p/teslas-next-gen-model-may...