> Maybe that happens in Miami or Boston
Doesn't happen in Boston. Well, the areas around Boston, anyways (anyone who drives in Boston is insane). Only one or two cars merge in front of me in heavy traffic, if that. It's rare enough that I'm not even really cognizant of it.
I can only imagine that these people complaining about everyone doing that are themselves the people who do that. Probably also the same assholes who know there's going to be a long line for the ramp and, rather than getting into it and waiting their turn, stay a lane over and then try to merge in right at the end.