You’re using the same form of argument, though: qualitative, not quantitative. I don’t dispute that a lot of (maybe even most of) the people driving the Cybertruck won’t actually need it for any utilitarian need, and most of the rest would still be better served by Home Depot truck rentals and the like. Nevertheless, I only really care if they’re causing disproportionate damage. If they’re causing less damage than a Prius, then it’s still the gas holdouts that need to be convinced, not the people driving bigger EVs than they need.
So how bad is it, actually? This page lists CO2 per kWh for various areas. In particular, we can look at the US average (0.98 lbs/kWh), CA avg (0.5 lbs/kWh), and PG&E (the big Silicon Valley producer, with 0.16 lbs/kWh).
Tesla hasn’t reported Cybertruck efficiency, but I think we can expect it to be somewhat worse than the Model X. 450 Wh/mi is probably reasonable (maybe 400 on efficient tires, but I doubt we can count on that on average). Supposing the average 13,000 miles per year, we have:
US avg: 5733 lbs CO2/year
CA avg: 2925 lbs/year
PG&E: 936 lbs/year
Now consider a 55 mpg Prius. That’s 236 gallons per year, and at 20 lbs/gal, 4727 lbs/year. So, the Cybertruck is a bit worse than a Prius for average US power, but a lot better in CA, and *much * better in PG&E land (let alone all the local carbon-free energy producers).
Consider instead a 20 mpg F-150. It’s emitting 13,000 lbs of CO2 per year. If you can convince just *one *Californian F-150 driver to switch to a Cybertruck, it’s like taking two full Priuses off the road completely. It’s an insane difference in emissions.
CO2 of course isn’t the entire impact of big trucks, but I’d say it’s by far the most important one. The raw materials of the Cybertruck should be easily recycled (like most cars these days). I’m hoping we’ll see a robust economy in repurposing older vehicle cells into stationary storage where they don’t mind a slightly reduced energy density. And then there’s the increased threat to other road users from having such a massive vehicle, but overall Tesla produces vehicles with advanced collision prevention systems, so hopefully that’ll take the edge off.
In short, if CO2 is the big ticket item we care about, then getting people to switch to an EV at all is by far the most important thing one can do. If some people take bribing with EV monster trucks, so be it. I’ll worry about downsizing those after everyone is on board with EVs.