What verygreen is saying is not factually accurate in a lot of places.
M3 production was limited by cells in Q1 but is not in Q2. Model 3 still had reservations that cover most of Q2 and there is no inventory buildup, that claim is complete nonsense. At the end of Q1 there was some high end inventory in the US and some in China in case of tariffs. They had a lot in transit due to international orders and production schedule for different geos.
The claims about low demand and limited production of Model3 are most likely both true. Elon is trying to control spin of the conversation.
Tesla probably was cells limited on production site during Q1, and simultaneously overproducing the demand(increasing the inventory). Almost whole Q1 the SR+ was not available, thus not contributing to the demand.
The Production&Delivery numbers for Model 3 just confirms building up the inventory. Subtracting the vehicles in transit of course. The vehicles with wrong stickers and some import issues are most probably categorized as "in transit" too.
No confusion on building up the inventory of Model 3 then, based on official numbers.
It would be logical, that the inventory for model S&X would decrease in Q1, due to low production caused by the upgrades in manufacturing line(demand is presumably still strong). Instead we have another inventory buildup. That points to lower demand for pre-Raven Model S&X during Q1. May be the Tax-credit effect from Dec 2018.
We will see. There goes hoping for good Q2 numbers.