No where has it been stated (that I have seen) that planetary landing would be a paid for expansion. Show me a link to a statement that clearly says this.
Yes it was said it would be added later, and there has also been no indication that you wont have to pay for it either, but still...
I would happily collate this information, however I am unaware of threads you have seen.
If you could list all the threads you have seen, we can try and find anything you missed.
Its a shame, though I was aware of the charged for updates, when I made my backing pledge, so I couldn't complain.. you pick what you can afford and remember the game part is the fly-y shooty bit with the selly stuff. The rest is eye candy... and we don't know the cost of the updates.. You could buy £35 pass, and then the updates could be cheaper, so without the information you have to make a choice and accept that joining early in development is a risk. And sometimes you win.. and sometimes sadly you miss out.
I hope that more of the disgruntled can put their disappointments aside and start to enjoy the game without too much embitterment.
It is afterall KICK ASS!! And you helped make it happen...