What about device attestation? Will you be able to run banking apps and Netflix et. al.?
For me the biggest concern is that while you may be able to use and run your own device, you will be locked out of most propietary services. Much like how more and more websites simply don't work with Firefox anymore.
This might be one of those things were if there is big enough user base, companies will start to take it seriously.
Here's a community maintained list of apps and whether or not they work:
https://privsec.dev/posts/android/banking-applications-compa...
This is linked to from the Banking Apps section on GrapheneOS docs: https://grapheneos.org/usage#banking-apps
Sample size of 1: my UK banking apps all work fine.
Well i do use banking and netflix on graphene os on my pixel 8a and everything works perfectly
All Swedish banking apps I've tried works great. Including BankID, swish, Sparbanken, Nordea, LF, Revolut and more.
I've had less issues than with CalyxOS for example, where more apps broke.
Netflix and almost all banking apps work fine.
https://grapheneos.org/articles/attestation-compatibility-gu...
https://privsec.dev/posts/android/banking-applications-compa...
I only use Firefox. It has been years since I ran into a chrome only website. Though recently I ran into an edge only websit on my corporate network, not even sure how that happens.