No, the right to use is not the same as the right to release. You can buy the sheet music of a proprietary song and are allowed to play the song on your instrument, but you are not allowed to sell copies of the sheet music.
Fairphone never promised anything!
They always just expressed their hopes for things they plan to achieve.
They didn’t have to. I’m sure they went through that scenario and came to the conclusion that it wasn’t reasonable. They probably also saw that there was a discussion about this on the forum.
You can only change the license of something you own.
Fairphone tried very intensely to find sustainable ways to produce more spare parts, but that just won’t happen. The quantities they’d need can’t be produced at a reasonable price.
I think they have proven their commitment by doing their best to try to get new spare parts and a software update. And they do still support FP1 users wherever they can. They can’t offer some spare parts anymore (if you’re lucky you’ll find them in the Market) or fix software issues with an update, but with every other issue you can still write to support and get help.
Fairphone never said that. They still want you to keep your phone as long as you can and will help you every way they can.