As a developer, I say not trivial. This isn't just about bug trackers, because bug trackers integrate with version control, maybe our IDE, and soon code review tools.

A bug tracker can be like email, on the screen all the time, with a lot of our communication with co-workers going thru it ( and in fact the good ones incorporate email into them very well. )

So, it's the software we are living in. Next to our text editor, it's maybe the MOST important software.

Not counting Pandora, of course.