Unfortunately from what I read a couple of times, including a month or so ago, GrapheneOS discourages and doesn't support rooting the phone for security reasons that seem vague to me and don't appeal to my need to actually own my phone and OS. You could still root it with some third party tools from what I know, but not having root as the default makes it less of a secure FOSS OS and more of a closed down toy.
As for payment apps and other crap that refuses to run if I, the owner and administrator of my own device, don't have admin access, I would just refuse to run it. What's next - websites refusing to work if I have root on my Linux desktop?
These reasons for not supporting the root have been stated on their discussion forum multiple times.
But they do not stop you from doing so, you can fairly easily build your own images with root enabled.
>but not having root as the default makes it less of a secure FOSS OS and more of a closed down toy.
I don't get it, it's "less of a secure FOSS OS" to not have root by default, but it's secure to run random apps as root and breaking android's security model? What's the threat model here?
Yeah, this is the deal breaker for me as well. The fact that I own my device is non-negotiable. It is the reason I left the stock OS and I'm not going back. The idea that I can't access my own files if an app doesn't explicitly give me access is wild to me. I understand there are security risks of a root permission but it is important to have that fallback when you need it and the existing permissions aren't sufficient.
LineageOS also discourages and doesn't support replacing the core of the OS with a rootkit providing persistent app accessible root. GrapheneOS is no different from LineageOS in that regard. People do this with GrapheneOS regardless of our strong recommendation not do it. Our reasons for discouraging it aren't vague. It very directly harms the security model and is not a good approach to implementing any of the features hacked together through it. Those features should be properly implemented to fit within the overall approach taken by GrapheneOS. Giving root access to a huge portion of the OS harms security even if you never use the feature. It does not mean you can't do it, we only recommend you don't.