That last bit: yeah I imagine that's a foghorn out to investors so they can get funded.

For the carbon footprint, I think it'll be negligible. For the purpose of moving blades, you'll only need a handful of these planes. Until the wind farms really get spun up but you could easily use 1 plane per 1-5 giant windmills at a time since the transport of the blades will far outpace the construction and assembly. So unless we're building a lot all at once, a small fleet will be all that's needed. And the costs of this aircraft to fuel will only be a few times a normal big jet, that we have going thousands a day.