Is it just me or is this entire article a bunch of junk? Right off the bat, they give 2.5% as the symptomatic rate of those infected. As in, 87.5% are asymptom

Is it just me or is this entire article a bunch of junk? Right off the bat, they give 2.5% as the symptomatic rate of those infected. As in, 87.5% are asymptomatic? That seems completely bogus. Moreover, I don't see how they get to the conclusion that hypothetical CNS involvement is "in contrast to" the currently accepted view that ACE2 is the primary receptor. The significantly weaker repesentation of smokers in the COVID patient population is intriguing, but why are outpatients even more weakly smoker-proportioned as compared to in patients? Also, doesn't this fly in the face of the Chinese data where smoking is believed to be a major comorbidity? Their homology argument seems particularly weak, since I see 6 non-conservative mutations in a 12 amino acid stretch. Finally, I should note that this article is not peer reviewed at this point in time.