FACT: Plaid+, with a completely new battery, would require significant engineering resources.
FACT: Tesla is talent-constrained.
OPINION: Launch/ramp of CT (higher volume) and Semi (more integral to mission) should be Tesla’s top near-term engineering priority and top short-term 4680 destination.
REPORTED FACT: Plaid+ demand was fairly even with Plaid.
Given all of this, it is easy to see that Plaid+ was creating a Roadster 2-like situation. And given the resources and attention the S/X refresh has demanded - hardly a hobby or fun side project for nostalgia’s sake - it is easy to see that Plaid+ would get de-prioritized further and further into the future. Halo cars are important but not at the expense of the high-volume vehicles, which are going to be (and have explicitly been stated to be) Tesla’s top priority moving forward.