I took that statement as age based. Not cruised with RC a lot before the introduction of the app. The app is nice but not required. Since this upsets you, did you annotate your displeasure with the app on your PCS?
What cruise line lists the evening dress code for the MDR in their app? I know Celebrity doesn't. I don't limit myself just to the app.
The Cruise Compass is still being sent to the cabins. We did a March B2B cruise on the Explorer and it was delivered every evening on both legs. If anyone wants the CC and aren't receiving it, just ask.