I'm waiting for my MYP also, but the previous delivery window (before the update) was Nov 2022 – Feb 2023. Now it is Jan 2023 - Mar 2023.If tesla delivered the MYP on time like MY SR, all of us with MYP order should be already taking delivery now in NOV.
So, not "all" MYP orders would have been received by the end of 2022 anyway - you may have ended up getting your vehicle in Jan or Feb which is within the updated delivery window.
I'm hopeful the new MYP builds when they happen have at least some of the upgrades (albeit may be minor) like updated rear seats.