Still, it's bizarre considering you can install Linux on any PC/laptop you buy.
The bigger issue of course, is that you can't just install Linux on a phone. They're all random pins soldered to random chips and all use patched to hell Kernels with binary blobs. Linux distros can release images that are designed on boot on x86/x86_64/PPC/Sparc and they'll booth up and install on most of those machines. That's impossible with nearly all Android/ARM devices.
PostmarketOS is trying to change that from the other direction, but Librem is a huge step in giving developers embedded hardware that doesn't require carefully modified and patched kernels/bootloaders.