Well the bike comment is making a legit political point - that a _lot_ of stuff can be delivered with a cargo bike, thus greatly reducing urban pollution and CO2 emissions. True, I guess a Tesla isn't producing local pollution the way a diesel truck would, which is a positive, but it's still a very inefficient way to haul small loads, given how much of the power is being consumed just moving the weight of the truck itself.
In general people drive too much, and the mass and size of the vehicles they use is wildly disproportionate to what they carry in them. I suspect that 90% of the fuel use of most cars/trucks is expended on moving the mass of the vehicle itself.
Sure, but again, it's what they have. The average American is not going to buy a cargo bike to get to/from work, isn't likely to buy a cargo bike for so specialized a job as hauling moderately sized objects with a flat surface along flat roads, and probably isn't in shape enough to utilize a cargo bike without a few years of working out anyhow, so they will need
another vehicle. They may however use a tesla for more than just hauling objects, can haul objects much further than most humans could with a cargo bicycle, and it can also actually haul a second (or third, fourth, fifth) person as well. Sure, an argument could be made for every human buying an electric smartcar, buying a cargo bike, and living no further than one mile from any location they would need to haul <500lb of flat objects, but that isn't reality. And here in reality I'd prefer everyone have a stupid cybertruck that only carries some bags of sod occasionally than I would have them buy a f350 super duty to carry their dumbass spawn around.