In my experience, the vast majority of bugs are quick fixes that are easy to isolate or potentially even have a stack trace associated with them.

There will always be those “only happens on the 3rd Tuesday every 6 months” issues that are more complicated but…if you can get all the small stuff out of the way it’s much easier to dedicate some time to the more complicated ones.

Maximizing the value of time is the real key to focusing on quicker fixes. If nobody can make a case why one is more important than other, then the best use of your time is the fastest fix.