I've got a Pixel 4a and I'm wondering whether it makes much sense to install GrapheneOS on it.
The reason I'm hesitating is its age (obviously). Google will EOL it in August 2023, meaning there will be no more firmware updates. I am aware of the security implications of this, but I'd be willing to go without them for a while since my threat model permits it.
My question is: how long would GrapheneOS provide Google's security updates for Android after EOL date for the Pixel 4a? Will Graphene drop security update support for the 4a immediately, and if not, how long would I potentially still receive security updates for the OS?