A good burger is meant to be juicy – with the right spices, and the right type of softness. If you like a little of your cheese or bacon, that’s upto you.
A bad burger is one that has too much mayo/mustard, to an extent such that people can start calling it a curry/jhol if they want, has too much cheese, way too much hard bacon, extra patties that don’t even fit, and turns soggy after 5 minutes.
tldr: what you guys call a “juicy” burger these days is actually an abomination.