[Nyororin]

The train pushers are literally at only a couple stations for less than an hour. I would even go so far as to say that they`re possibly better known outside Japan than in.
Japanese people who do not ride that train offer the same type of cringing and shocked reactions as people outside Japan do when seeing videos of it.

Even on some of the more crowded looking trains, they could alleviate part of the problem if more people would actually move away from the doors if they`re not getting off for several stations. About half the time, you can find a relatively non-crushed spot if you fight through all the people packed around the door and stand in the aisle. Of course then you have to fight back through them to get off, but if you`re travelling to a station beyond the one where most of them get off it`s worth it.
But people stupidly linger by the door making it nearly impossible to get on (this happens even if there are seats open and the aisle is completely empty) because... people are standing by the doors. The thinking tends to be that "If I don`t stand by the door I might not be able to make it off at my station because of all those people standing by the door!"... So the problem is born.