While it sounds like it already works on GrapheneOS having a corporation come out and say they won't go out of their way to break it is quite unusual.
I also have a really niche feature I rely on daily (letting me "wifi call" from one sim over the data line of the other sim), and it's really hard to tell if GrapheneOS supports it.
If I can grab my old pixel that's stored in a box at my parents' house on another continent I might give it a try, but GrapheneOS really doesn't seem ready to be a daily driver.
Not sure about that other feature you mentioned, but you can always revert back to stock if you don't like GOS. Restoring a backup is easier than it's ever been nowadays :-).
If I'm going to have to install a bunch of google products onto my phone anyways, I don't buy the benefits as much.
I also had a recent experience being shaken down by a border guard entering Australia, and if he'd asked to go through my phone, explaining that I'm running a weird privacy focused OS he's never seen before seems like it would be a great way to increase my chances of spending a night in airport jail and being put on the next flight to North America. I don't really have anything to hide and appearing like I have things to hide could seriously inconvenience my life. Barring a tourist from entering a country has a very low bar of evidence.
Edit: Also the backup restoration is a bit more of a mess for me right now for the same reason I need the dual sim feature. I've got an American esim that's difficult to reactivate without being in America.
While I understand your position, I cannot help myself from posting this response with the hope that more people will consider their own "I have nothing to hide" positions. See https://moxie.org/2013/06/12/we-should-all-have-something-to...
edit: Linking to original HN discussion about this article - https://news.ycombinator.com/item?id=5869394
for the same reasons SMS has always been unstable.
It’s the nature of the protocol, unfortunately.
Rcs had a bug that was fixed recently though
As delusional as ever.
Snowball effect (for both sides, software publishers and OS vendors).