Ebola's almost complete lack of aerosol transmission is and will remain a substantial barrier to the population risk the disease poses
The thing is, what you're saying there is just plain implausible unless the air itself kills the viruses with remarkable efficiency, in which case it would survive for only minutes on a hard surface (like HIV), rather than hours (like influenza). From what I've read, it survives for hours on hard surfaces, which lends serious doubt to any claim that Ebola exhibits an "almost complete lack of aerosol transmission".
Just to be clear, I'm not saying that Ebola is airborne. It currently is not (or at least it is not currently believed to be). However, it is unsafe to assume that the way a virus behaves in Africa (hot weather, high humidity, little use of HVAC, mostly rural, families that stay home to care for the sick) will match the way it would behave in the United States (highly variable air temperatures, potentially low humidity because of the use of HVAC, heavily urban, people who go to work even when sick). Such a conclusion would be fundamentally invalid because it doesn't control for an absolutely insane number of variables.
In particular, with airborne diseases, propagation by aerosol transmission increases rather dramatically when the air is cold and the humidity is low (particularly when it is insanely low because of HVAC). That's one reason why the cold and flu season in the U.S. spikes markedly during the winter. In the parts of Africa where Ebola is currently found, the hot air temperature and relatively high humidity don't lend themselves to aerosol transmission. So there's a distinct possibility that the exact same strain of disease that is not airborne in Africa would be airborne in the United States.
Such temperature-dependent and humidity-dependent behavior would also be consistent with researchers' conclusions after an October 1989 lab incident in which the closely related Ebola Reston virus spread rapidly among physically isolated populations of lower primates. "Due to the spread of infection to animals in all parts of the quarantine facility, it is likely that Ebola Reston may have been spread by airborne transmission." (Beltz, Lisa. Emerging Infectious Diseases. 253)