er340790 you are right!
What they mean is that
they and their members will no longer be
paying for the 50,000 trees but we will each be paying for our own little tree. Consequently, this is as IATA say, "... a winning proposition for everyone."
When I made the post, I added "This is a press release, so the usual rules apply" but I then deleted it as I knew that we all know that a press release carries the fantasies of it's author ...
When I print my E-tickets, I mark the print page dialogue box for Page One only, due to that ridiculous amount of small print, to which you refer. I do not read small print as I know that it is only there to ensure that - in any dispute - I will lose. Since things normally go OK, it does not matter and I can sign (analogue or digital) to accept the small print. One day, that will not be the case.
When travelling, I also carry an electronic copy of the tickets/documents on a USB memory stick.