video is too long for me to watch, sorry. I'm not sure what his mistakes were.
That said, we have brought our infant on
DCL multiple times. It does take planning, and you really have to be organized. Some aspects of the trip become extra stressful. Making sure you don't forget any supplies you need for feeding/nursing, special dietary needs, etc.
However, going anywhere with an infant is extremely challenging. A DCL cruise is amazing. You know your meals are provided, want to go to the gym, spa, pool, etc? it is right there. Mom and dad can take turns watching the baby, and if they want a date night (or 3), they can use the small world nursery to reserve childcare.
DCL provides a lot of things you might need. They go well above and beyond any other cruise line in that respect based on our research.
Yes it takes some planning, but we find cruising to be one of the easiest ways to travel with infants.