Still disagree with you. There's one significant issue with Tesla: delivery when it's a new product. That's what we saw in 2012/13 with the S, 2015/16 with the X, 2017/18 with the 3, 2019/2020 with the Y. Any other time they've been relatively stable at producing cars in a timely manner.
While the refresh is, for the most part, new, it's not a new product as far as I'm concerned. Much of it is still the same: the battery packs, the structure, the body, the FWD, seats, etc. I think most of us are aware of the majority of the significant changes, but not a fully itemized inventory of every single change. Regardless, Tesla essentially cutoff production to implement this change and everything slid off the rails. One would think they'd have done some testing and planning before initiating these changes. Clearly they did not. Yes, there's been delays due to COVID, but it certainly doesn't explain a year long loss of production when they were anticipating 2 months. Tesla was still able to deliver record numbers even in this past quarter despite the challenges. Somewhere down the line they need to assess what went wrong here because if they did the same thing to the Model 3 and Y for any major refresh, that's going to be significant issues for the company as a whole.