Sorry for the blatant n00b question. I searched online, the FAQ etc. and didn’t see what to me is an obvious question. Supporting old devices is great. In the PC world we have general linux, but on Android and some other consumer devices, solutions have been limited. There are Android forks(?) or implementations like LineageOS that run great. I’ve used non-Google Android since 2018.
So what is the motivation for yet another OS solution? There must be a reason for this project to go on and have so much enthusiasm.
We think computers should act in the interest of their users. For example, they should not participate in the privacy nightmare of targeted advertising, as it is directly built into the operating systems from Amazon, Apple, Google and Microsoft, as well as the apps and services recommended by them.
This is kinda FUD, right? Google-Android has a lot of privacy invasion. But there are all kinds of Android versions that are de-Googled.
My best guess right now is that it is attempting to provide a “full featured” distro for devices that run phone and tablet OSs now. So if you want a server or full coding environment on a phone, pmOS may be better suited for that than an Android “fork”.
Another benefit to postmarketOS is that it runs (close to) mainline linux.
In the android world, vendors fork linux, put their own (often badly written) patches on top to make the device work, and then stop maintaining this fork after a few years.
postmarketOS carries as minimal patches as possible and actively works to mainline what remains. This makes the “10 year support” goal very achievable, as once a device has mainline support, it will get updates as long as the linux kernel itself is maintained.
By making everything standard and relying on the upstream kernel and linux stack as a whole, any improvements made to phones also benefit laptop and PC users, and vice versa. So, we have one big platform that can support any kind of device, sharing resources so everyone benefits.