The common standard for planes, trains, bus, it it empties from front to back. If you are standing behind row 5, you would wait for everybody in the first five rows to get up and get off before you get off.

Not saying that's right or wrong, it's just how it is.

If you want to be the first person off the plane, then sit up front, otherwise you will have to wait because there's far more people who will let everybody else out first than who won't.