100% correct. None on their own are a deal ender but at some point they all cumulatively add up. For us we also enjoyed the previous process for room service breakfast. It was our early morning wake up call and we enjoyed something light with coffee in the cabin, 'breakfast' was always a few hours later mid-morning.
It has been many years since I have been up at 4am partying so the pizza shop closing won't impact me but that wasn't the big story in this release. It was the change in 'late night' offerings which is really anything past 9-9:30pm, not really that late.. The lines for pizza are always long as it was even with other offerings on the Lido. Now pretty much moving everything to that single station will likely create a negative experience for the customer because of the waits and lack of choices.
This is just another step where Carnival is pushing people to the paid room service in my opinion. It you make it undesirable knowing people tend to avoid long lines for food then they are more likely to order it for delivery. They are creating revenue for what was once an expense.