Is that good or bad?....which nobody but a bunch of nerds on the internet understands
On one hand, being one of the nerds on the internet means being aware you can get screwed for buying a car made in early February that had major upgrades in late February. Such as the upgrade from MCU 1 to MUC2. Sure the early Feb 2018 buyer could upgrade for an extra $1000 a year or so later. But, if they knew this was coming, like the nerds on the forums, they could have saved the aggregation of dealing with a slow screen UI and had an extra $1000 in their pocket.
On the other hand, since most people are unaware, it means that nerds on the internet can sell their used MCU1 based car for as much money as someone else with the MCU2 unit. Since most buyers go by model year.