Mac015 - You raise interesting points, some of which I didn't consider when getting my 2023 MY SR. Thanks for the post.
A few thoughts: I deliberately chose the new battery pack since it's a structural frame member. Adding the GigaPress construction was also a deliberate choice to help improve structural stability, and hopefully better construction alignment. Sadly, my MY still had misaligned doors on delivery, and the rear hatch also isn't quite aligned. Still, I felt that in the long run the construction difference would make the 4680 MY more likely to remain structurally sound.
There are several articles that suggest that the 4680 pack is being repurposed for the CT which is also built in Austin, and that's the reason why the SR MY is discontinued. I posted about that here: (fast forward to 2:39 time code)
What very much disturbed me, as you point out, is the poor SuperCharger results. I traveled to FL and back and found that some stops were longer than expected. It wasn't until more data about the sharply sloping charge curves became available that I realized that Tesla should have disclosed that when the car battery pack was released. I'm frustrated that I was "misinformed", perhaps deliberately, by Tesla, but I don't SC often and in reality it's not a deal breaker, just annoying. I also found that the 150KWH SC are often less used than the higher capacity 250KWH units. That typically means that when I need a SC the lower powered units are available when the higher power ones have a wait (the wait isn't long, but it occurs at popular spots).
One ray of hope is that Tesla is deliberately handicapping the charging speed of the 4680 battery pack until they get enough real world data to indicate how faster charging affects battery life/longevity. That's likely given their past history, but still should have been disclosed when the pack was released. I also think that since the CT relies solely on 4680 packs it would be a very bad decision for Tesla to create an entire line of new vehicles that have long SC wait times. That makes me more confident that eventually the charge speeds will be increased. And if not, I still have my GigaPress/structural batter pack construction.
Would I buy the SR MY now, knowing all of this? Probably not, but I'm not overly upset as my April 2023 purchase price was $15K less than the January 2023 price, and I truly believed that the Austin built 4680 GigaPress version was better.
Addenda: After writing this I want to clarify why I probably wouldn't buy the MY SR. It's more related to the sharp discounts on LR MY inventory cars. At my local Tesla store I can get a LR MY for immediate delivery for a nearly $5,000 discount from list price! That makes it CHEAPER than I paid for the SR MY in April. It's the discount pricing that pushes me to the LR MY, not necessarily the 4680 pack charging speeds. Also, when I bought the SR MY I needed a car immediately - I ordered it in mid April and got it in 10 days (diverted from another location in route). The wait for the LR car was 6 weeks. There is no wait currently, so moving to the MY LR is financially a terrific deal if you get an inventory car and there is no wait time penalty either. The longer range is just a bonus.