They normally do- this flight left MUC two hours late which was why it was part of the VFR landing sequence on this one day and is not normally a problem.
It's like calling a year in advance for a dinner reservation and showing up and having to wait 45 minutes for your table "because it's a really busy night."
It's more like showing up two weeks late to your dinner reservation, on a Valentine's Day Friday night rush, and being upset that you don't have an accurate ETA to get seated.