I try exercising fair bit of tolerance.
Maybe etiquette needs to be brought up on airline webpage or in email confirmation under heading "How to make your trip enjoyable..." or like.
Or, per-flight announcement, along with advice on storing bags appropriately (wheels to the back, smaller items under seat, et al), turning mobile devices off, DVT, etc.
I don't know - the majority of people seem to be able to manage the majority of the time. There is a small extreme minority that hate seat recliners -
invariably they report the person in front of them 'slammed the seat back into me'. I suspect most of the time the person in front did no such thing, but just reclined their seat in the normal manner.
Seats recline - this adds comfort, and most airlines advertise this fact (although just on this I notice the QF economy pics now seem to show all the seats upright!) Passengers know this when they book tickets (that seats recline) and as I said, if you don't like it, use one of the options available to you to change it (even if work doesn't allow premium cabin travel you can always pay the additional yourself to upgrade or select a seat that will inconvenience you less if the person in front reclines...)
A lot of people also seem to get upset the person in front reclines (sorry 'SLAMS their seat back') and 'almost crushed/did crush/would have crushed/
could have crushed my laptop'. Well, you know, the fact remains that seats recline, and the person with the lap top needs to take responsibility to make sure their laptop isn't going to get crushed. Seat recline can happen at any time, without warning. You gotta be prepared for that and accept some responsibility!
This anti-reclining thing (and sense of self-entitlement) happens even in business class. I was on a flight MEL-SYD and decided to recline (no I didn't check behind me - seats are designed to recline without interfering with the person behind you) and next thing i know there is a tap on my shoulder asking me (telling me) to put my seat upright because it was interfering with this guy's laptop. I suggested he slide his tray-table back towards him... to which he looked down at his stomach and said he couldn't. I said 'that's ok, I'll give you a moment to arrange your lap top so it's not in the way'.
If everyone reclined - problem solved. Just because someone doesn't feel they should recline (because it impinges on the person behind them) doesn't give rise to a legitimate expectation on their behalf that the person in front of them shouldn't.
However, that being said, last year I flew coach on a short 3 hour flight (chinese carrier, no status) and was lucky enough to score an exit row... out of consideration for the person behind me I didn't recline. But I wouldn't have expected the same treatment if I had been the row behind.