GrapheneOS has minimal, private [1] system apps so you don't have to debloat anything yourself. Manual debloating is not a good solution at the user level.
Some system apps are being overhauled, so that's something to look forward to. Gallery will be [2] based on ReFra [3].
[1] Except phone and messaging but that's the cell network.
GrapheneOS recommends Signal/Molly or SimpleX instead.
[2] https://nitter.net/GrapheneOS/status/2083724696722301266#m
What does GrapheneOS have to do with this?
This is very useful on OEM ROMs with a bunch of scrapware, no one expects a custom ROM to have this issue.
GrapheneOS has got absolutely nothing to do with any of this. LineageOS, pure AOSP, are all the same. No bloat, no locks. The way they've successfully marketed a more involved custom ROM as a special OS to tech illiterates is very funny I'll admit.
in grapheneOS you can disable or uninstall almost everything without adb anyways
And Graphene OS is also anti-user by being tremendously rude about NOT providing root and using the same tired "suck-u-rity" crap Google and Apple also use.
If you're smart enough to buy a phone that supports GrapheneOS, AND install it, yeah you should have root.
And tools like XPrivacy and plugins allow control of subsystems like GPS spoofing and lying to apps.
GrapheneOS or other custom ROMs don't solve the actual problem that you can't just buy a smartphone and install any operating system like you can with an actual computer, despite technically being one.
Also, GrapheneOS supports device attestation (the non-google kind at least), which is still ridiculous as such systems have no benefit to people, only to technofeudalist corporations.