It will never happen again because the way to promoting new project has changed. In the past because the cryptocurrency community is not big so it was a good way for XEM to reach more people. Now everythign has changed, more better ways to promote a project.
If it never happens again it means that those who this happened to have some sort of Legendary status indeed. It's crazy to even think that something like this has actually happened, don't you think?
Anyway I'm quite convinced that something similar will happen again or is happening right now as we speak. The main difference compared to back then is that everything has become so much more, there's just no way to keep up with everything.
When I started with crypto a few hours a day gave you a pretty good overview of everything