Assume that half of your passengers are more likely to be upset if you make announcements... and the other half are the opposite, they will be upset if you don't make announcements, particularly for the breakfast service. So what do you do? Would you rather get complaints for making the announcements.... or not making them? If you don't make announcements, people will have legitimate, compensable claims that service wasn't provided, information wasn't given, etc. If you do make announcements you risk annoying some people, but they won't be able to claim you didn't make the announcements.
I don't care about the announcements themselves. They can prattle on about pizza, beer, scrambled eggs, and the hokey pokey for all I care, but I want the option to shut that nonsense off until I wake up.
I used 37db earplugs along with sound-muffling (not canceling) headphones on our last trip, and I
still woke up when the cafe car opened for breakfast and when the SCA blathered on about Kansas City for a good five minutes. That is why I want the option to turn it off/down or switch channels like I used to.
When I traveled in the transdorm, I didn't hear the PA at all. Someone told me the PA is shut off in the transdorm. If that's the case, then I'll make sure to book a room in there from now on. It's a decent compromise, especially since I liked the transdorm.