I disabled Google Photos but I didn't notice any issues with Camera except for not being able to open the photo just taken from the camera interface. Am I missing something else?
I avoid RCS like a plague, so I can't comment about that.
I am not sure why would you have to install messages has nobody uses RCS these days.
As for calendars and contacts, I am struggling to see the added value over the fossify alternatives, hence I don't have them anymore on my smartphones.
Pixel camera and google photos are nice to get the most out of tye pixel camera but thanksfully grapheneOS lets you use them without access to network. Stock Pixel rom doesn't allow you to do that. That is a major difference imho.
I think it's because they got blamed for not warning everyone with the Valencia floods last year but it's really ridiculous now. Now they blow up everyone's phone just when there's going to be a bit of wind.
If I have to install Google Messages for RCS, Google Calendar, Google Contacts, Pixel Camera (which forces you to use Google Photos for basic functionality), … where is the benefit?
If I have to turn Graphene into a Pixel to make it usable, and I did, there’s not much point. And the apps are 90% of the time very noticeably better on iOS, so overall turns into a very bad trade.