It's possible that you are not the intended audience for such an article, which is clearly targeted at people like the author: a non-expert who is sometimes interested in technical topics. Simplifications, which were indeed abundant, are not the same thing as errors, which is what it sounds like you were implying with "ignorance". If the author was all, "the thrust-to-weight on a Merlin is like, awesome" and you were like, "but that vacuum ISP, yo!" then you should probably be following SpaceX from nasaspaceflight.com rather than from an eclectic blog.

Is there any good writeup on the 'geophysical ignorance' anywhere? I checked out some of the comments but they all seemed to be along the lines of 'hydrogen rules, batteries drool', and I can't take hydrogen-car proposals very seriously given Tesla's demonstrated success. In any case, I read this a few days ago and found it very interesting. He's at least up front about the fanboying, and the overoptimism seems to come from Musk directly (before I read this, I assumed that Musk's talk of going to Mars before 2030 was so much PR intended to keep his mystique alive and stock prices & valuations high and, among other things, deflect attention from the extent to which his companies are still dependent on subsidies; after, I began to take seriously the idea he might actually believe all that), and if nothing else, it seems like this is the closest thing to a comprehensive Musk manifesto - which is interesting all on its own.