I have a 4a running graphene and I love it but after 3+ years the battery life is shot. I really didn't want to buy any of the new pixels because they are all too big and I hate big phones. I was thinking of just buying a new 4a and installing graphene again (because got forbid making a phone where you can just swap out the battery in this day and age) but are you saying this would be a bad idea at this point? Like even if they keep graphene up to date the phone will still be outdated (and therefore vulnerable) at the kernel/hardware level?