I think what's been driving all the maneuvering this year as far as pricing and available configurations is a question of balancing 1) keeping the number of variations of the Model 3 within Tesla's capacity to efficiently produce the car (to avoid the downtime issue in switching production from one variant to another which Neroden has been zeroing in on) with 2) having a selection of available variants sufficient to appeal to the consumer demand needed to match up with the targeted Fremont production of about 7k Model 3s per week.
That is, it isn't as simple as a demand issue, OR a production capability issue, but, more an issue of finding a product mix that can be realistically managed in terms of Tesla's production capabilities that has demand for at least 7k Model 3s per week. Think of that Elon line from a month or two ago, (paraphrasing) "It isn't if we have enough demand... the demand is there, we just need to make the car inexpensive enough for the people to buy the car."
I suspect that what we saw tonight reflects Tesla deciding that right-hand drive variants are a more efficient way of adding to their supply of what the market wants than offering the SR. Tesla may well feel it needs to go to adding right-hand drive availability to be confident about demand hitting 7k per week this year. To prevent adding right-hand drive availability from becoming utter production hell, drop the SR and LR from regular production. I suspect the market for RHD may be as much as 100k per year, (fwiw, I think the LR will come back once all markets have been cleared of their initial Dual Motor and P demand).
I think it is helpful to realize that while the long-term positioning for Tesla continues to look extremely compelling, they've seen a need to, and have made choices designed to tap a widening part of consumer demand to continue to go forward with raising production. We've seen several clear signs this has been done in a climate of softer present demand than previously anticipated. Tesla lowered prices twice this year, the second time, quite sharply. The Model 3 plan for Fremont has gone from 10k/week to 7k/week. At the end of February Tesla introduced the SR/SR+ about a quarter or two ahead of what they'd targeted just a month or so earlier (Q1 earnings call IIRC, they said summer or mid-year for these variants). Tonight, leasing was added for the US to tap more demand. Most evident to me that Tesla has felt pressure of finding the Model 3 product mix that tapped enough of the demand for the car was the media call for that 2/28 announcement. Elon consistently had said re Model 3 demand, ~500k-700k. When asked this question on the call, he said, with some agitation in his voice ~I don't know. Could only guess. 500,000? There's really no way to know~ (going off memory re exact phrasing, but, it was that big a shift). To be fair, I think since 2/28, things have been looking considerably more encouraging to those seeing the order rates. They raised prices back somewhat.
So, while the bearish ~"see, see, like we always said, demand is cratering" is nonsense, and, long-term I see Tesla selling millions of cars per year, I do think today a major aspect of Tesla's decisions re Model 3 offerings is finding a realistic expanded Model 3 product offering with enough demand to soak up Fremont production. This is neither a 'failure' or 'unthinkable, taboo, etc.' to consider.