I am genuinely not sure you understand what GrapheneOS is doing here. They were using French servers (OVH) for some infrastucture, and they are moving away from that because they are pissed at France.

They don't make GrapheneOS unavailable to French users, they just change "cloud provider".

There is no negotiation or conflict resolution there: they don't feel safe using a French provider, so they move to a non-French provider, period.