Ugh - we're back here again.
Let me try one more time:
The global supply problem (and chip shortage), which is affecting the entire auto industry, hit ultrasonic sensors recently. The leading companies that produce the hardware couldn't build/deliver enough to satisfy the demands of the various auto manufacturers. Many car companies removed ultrasonics from their new vehicles and told new owners their parking features were not available until sometime in the future.
Tesla had a choice. 1) Remove ultrasonics from their new cars, just like many others did, and tell customers that parking features would not be available until sometime in the future. 2) Delay production of new cars until they can get supplies of ultrasonics.
Since wait times for new cars are already several months, with some builds being 6+ months, delaying new car production would hit the bottom line significantly - who the heck wants to wait 12 months for a new car? The obvious choice is the first one, which Tesla did, just like most other companies.
Now, here's the difference between Tesla and the other car companies: Tesla is not going to put in ultrasonics later, when the global supply problem is resolved. Many other car companies are telling their customers they will retroactively install ultrasonics when they're available. Tesla is going to leverage their vision-only system to take over the functionality the ultrasonics were fulfilling.
So, NEW Teslas without ultrasonics don't have parking functions - just like the other car companies. OLD Teslas with ultrasonics still have their parking functions. Tesla is going to bring parking functions to NEW cars via Vision Only when it's ready (probably tested by the FSD Beta fleet, just like when radar was removed). Once it's tested and ready, it will roll out to the entire fleet. Until that time, OLD Teslas will still have ultrasonics and parking features. And we'll see how the timing compares to the other car companies. Can Tesla get parking functions restored to NEW owners before we see the other car companies getting inventory to install ultrasonics in their cars?