I'm disappointed with the tone here; not in a "you should be nicer" kind of way, but because he seems to assume that Musk is acting insultingly in his proposal.

This seems to me to be the way all startup ideas start: there's a hypothesis about X, so far I've found documentation to support that it is likely feasible to do (there are no immediate show stoppers), here's why, and so therefore I'll go off and build it and deal with things as they come up. I imagine this is how Musk works and that this is how SpaceX and Tesla started. The only difference is that this time Musk can't take it the rest of the way so he wants the community to take over the next phase if there's ample interest.

This article reads to me as coming from someone who wouldn't take on this endeavour themselves, and that's perfectly fine, but he instead comes across as entirely destructive, condescending and insulted (somehow?) when he may very well be able to contribute something.