> Musk is aggressively optimistic on what can be achieved and by when

That’s putting it quite charitably, IMO.

> but rational on product decisions

Hard disagree. You only need to look to his entire tenure at DOGE for literally hundreds (thousands?) of counterexamples.

Or, if you don’t count that work as “product decisions,” there are other highly questionable product decisions that he is responsible for: the rear doors on the Model X; the lack of instruments/gauges of any kind in front of the driver on the Model 3 and Y; the lack of proper safety sensors/protection for the hood of the Cybertruck, leading to mangled fingers; that stupid yoke steering wheel; and the entirety of Neuralink (just to name a handful).