What do you find the most compelling? IMO most of the article was well researched but leaned heavily in appropriate analogs, and it was also rather misleading in a number of areas, probably in an effort to support a conclusion that the evidence that did not actually support. For instance the author just completely hand-waves away the fact that most time on a Mars mission will be spent not in 0-g, but in Mars' 0.3g.

I do not, in general, find the article compelling in the least, but it spawned some interesting discussion!