I know, I read the article. We're talking about the utility of the design they ultimately wound up with, the "why" doesn't alter that. Designs are always a trade-off, the question is did they trade-off the correct things to make a really good utilitarian truck?
It's function over form from a DFM standpoint, not utility. Case in point, if they cared about utility, they'd quote torque numbers instead of 0-60 times. Not to mention the laughable sides and glass top.
I saw in another article that this is their first prototype, built very quickly, so I wouldn't read too much into details like tie-downs. For the rest, I guess how useful it is depends on the customer; e.g. I saw a contractor comment that the built-in battery power and air compressor would be pretty convenient for job sites. (Of course other electric trucks would at least have the batteries, but it remains to be seen whether they'll match this on price.)