@Kai *****
who told you embassies have no role anymore? You specifically select an embassy when you are applying through evisa and that embassy is the one who processes your visa application. You meet the requirements of that embassy or you don't get a visa.
In the past some people have just found a flight and took a screenshot of the flight from the airline and uploaded that and it was accepted. It just depends on what the embassy will and won't accept. If they don't like what you provide they will contact you for additional information after you submit your application.