Waze tells me that stuff too. About an hour before I would have arrived at a major accident, it had notified me about a detour onto a parallel highway I should take. As I got closer, it told me to take an earlier exit because the original one was starting to get backed up from people trying to detour. I got off the highway and got back on with only a minute delay in my ETA.

I usually switch between Google Maps and Waze depending on where I'm going and how soon I want to get there. Google Maps if I'm in no hurry and want to take the "normal" way. Waze for if I'm trying to get there sooner (speed trap alerts and shortcuts help) and I'm either somewhat familar with the route or don't care about the stupid shortcuts. Waze has had me cut through neighborhoods and drive down gravel access roads to shave minutes off the travel time. Most of the time it pays off, sometimes you just end up wasting more time at intersections

Same. I ignored it once and got stuck in a traffic jam with construction that was there the week before.