I'm in radio, but I don't listen to FNZ (when it was Big Ways and I was growing up I listened a lot). Part of the problem is that it's first quarter. Broadcast advertisers blow their budgets in the 4th quarter (Halloween, Thanksgiving, Christmas, when people are spending). Jan-Feb-March is the worst month for broadcast outlets.
People are broke from the holidays and it's winter...taxes coming up. So that's why you hear more promos.
Now that said, it's a poor job by the station to keep playing the sames promos over and over...I'd call it lazy. It creates "listener fatigue", which makes people switch stations.