all devices don’t have specific, stable builds, etc
GrapheneOS is actually very stable and has specific builds for all the devices they support. It only supports Google Pixels, because these are the reference devices that AOSP is built for. They also have great hardware security features like the Titan M series of secure elements.
Also, going this route poses a very real risk of bricking your device.
Not with GrapheneOS. Their easy-to-use web installer makes is basically impossible to break your device during the installation process. It’s really easy and maybe takes 15 minutes.