Yes I know, but I thought it better to explain in a different manner than just point this out.
Another way to look at the problem is how optimised the current strain is for human transmission. As a zoonotic virus it is not very likely that Ebola is well adapted for effective human-to-human transmission. We should expect that the more people that it passes through the better adapted to humans Ebola will become and the more difficult it will be to contain. The unknown is we don’t know how well adapted it could become to humans, but personally I would rather not run this experiment in the wild to find out.
Your comment is violently agreeing with his point.