Oooohh! Aaarggh!
Haven't posted for over three years, but this thread has got me going! Now I understand why so-called "Quiet Coaches" are so f'ing noisy.
Some people, it seems, just want to do whatever the f* they like. If it's against the rules, no bother. They will come up with all sorts of spurious justifications, so they end up feeling absolutely entitled to do so. Moreover, anyone who objects is just being out-of-touch, unrealistic, over-sensitive, selfish or whatever.
I sort of understand the poster who was suggesting he/she doesn't travel in the Quiet Coach, because it is actually more disturbing to be confronted with other people's utter selfishness and disregard for rules than it is to be surrounded by the even noisier environment in standard coaches.
I would like to retain quiet coaches, however, but think the rules should be made more restrictive.
I would say (OK, I am dreaming now...):
1. No making or receiving of any telephone calls. Phones must not ring at all, but silent or vibrate modes are acceptable, provided you do not answer the phone while still in the carriage. Texting/emailing permissible, provided any button tones, clicking, or haptic feedback have been switched off or minimised to the maximum degree possible.
2. Headphones to be used only if no sound is audible to other passengers. If anyone tells you they can hear, you have to accept that, even if you know they can't.
3. Talking prohibited, except for very brief communications with fellow passengers or staff relating to logistical aspects of the journey only.
4. Use of computers allowed only if the speakers are muted (zero volume), or with isolating headphones (see 2. above).
5. If you want to do any of the prohibited things, remember, you can always just get up and go to the vestibule or another carriage.