The i4M50, Mach E GT and even the P2 with perf upgrade have all matched or eclipsed the MYP in terms of performance.
Tesla has done OTA upgrades in the past that have bumped performance, so I’m not sure that this question is THAT outlandish.
That said, my guess is that the bulk of development has moved to the 4680 platform at this point. Not a ton of incentive for Tesla to go above and beyond supporting a platform that they plan to abandon.