It seems most of your complaint is that they "already have it on paperwork" and don't see it as UA trying to eliminate paperwork and make things more efficient.
I think birthday would be better listed if you are flying ON your birthday (ie. Together with milestones).
Regarding flight itens you've never been on a flight where they announce connecting flight info? I don't see the problem with giving more/better visibility to FAs. It would be nice if it was real time and could give updates on rebooking/IRROPS issues they could deliver to the pax. When I landed in NRT from SIN connecting to SFO-JFK if I didn't turn my phone on as we landed it would have been until I got in the lounge and that knowing there I was able to save my butt and snag one of the last J seats on NRT-EWR.
Information (given here) is not the enemy.