I will now consider buying second hand phone with postmarketOS support. It means I'll have to accept proprietary hardware but, as it will be second hand, it means I'll be more in line with my eco-environemental-whatever-half-baked principles.
Nobody cares, I just wanted to illustrate what are the reasons I would like to buy a Pine64 and how those reasons revolves around some basic principles and trade off's.
Regarding other postmarketOS supported devices, I quite like the Xiaomi Pocophone F1 and the OnePlus 6 - but be aware that bootloader unlock on the Xiaomi is a bit painful and charging on the OnePlus 6 is really slow (although that might have been fixed lately/be fixed soon).
Although the firmware mine came with had an issue and I did have to update it, I now prefer it to my Hakko.