I think I'm going to go with building 3 $50k Model 3 LR + PUP is easier than building 4 $35k Model 3 SR w/o PUP
Good point. Also, while Tesla is in the process of ramping up to 5000/week the cost per vehicle is much higher because they are incurring costs of plant, equipment, etc. designed to build 5,000 vehicles spread out over a smaller number, plus much higher labor costs per vehicle. So it makes sense to start with a higher priced model to reduce the cash burn during the ramp-up process.
But Tesla did not choose to build the highest priced vehicles first -- Performance or Dual Motors -- probably because they are more complex to engineer and build (and in the case of Performance lower volume). The LR/PUP as a first model is a middle ground that allows them to get to high volumes while minimizing cash burn during the ramp up process.
In any case, since it was the plan all along to start with the LR/PUP version before building the base model I don't think following that plan suggests anything has changed regarding Tesla's intention to build the base Model 3.